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1Author    M-S Delgado, M-J Macazaga, J.R M AsaguerRequires cookie*
 Title    Oxidative Addition Reactions of P(CN)" P(NCO)3 and P(NCS), to (i/5-C5Me5 )Co(CO)2  
 Abstract    The phosphorus pseudohalogens P(CN)3, P(NCO)3 and P(NCS)3 react with (?/5-C5Me5)C o(C O)2 to give the complexes (?75-C;Me5)Co(CO)XPX2 (X = CN, NCO, NCS). All the compounds are characterized by elemental analysis, IR. electronic and 'H NMR spectra. 
  Reference    Z. Naturforsch. 39b, 142 (1984); received October 3 1983 
  Published    1984 
  Keywords    Phosphorus Pseudohalogens, IR spectra, Cobalt 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0142.pdf 
 Identifier    ZNB-1984-39b-0142 
 Volume    39 
2Author    S.N SRequires cookie*
 Title    Influence of Aqueous Mixtures of Amides on the Kinetics of Electro Reduction of N i(II) and C o(II) at d. m. e  
 Abstract    Electroreduction of N i(II) and C o(II) lias been carried out in aqueous mixtures of formamide, acetamide and urea. Electrode kinetics in terms of theories of irreversible waves have been studied. After calculating the rate constants by D e l a h a y 1 and K o u ­ t e c k y 2 treatments separately their variation with electrode potential has been used to calculate the product 'ana\ The rate constants and 'ana' calculated from two different approaches show remarkable agreement. 'ana amide content of the aqueous mixture. 
  Reference    (Z. Naturforsch. 30b, 859—861 [1975]; received July 17 1975) 
  Published    1975 
  Keywords    Amides, Kinetics, Electro Reduction, Cobalt, Nickel 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0859.pdf 
 Identifier    ZNB-1975-30b-0859 
 Volume    30 
3Author    WolfgangA. Herrmann, Ilona SchweizerRequires cookie*
 Title    Komplexchemie reaktiver organischer Verbindungen, XXV [1] Stabilisierung von Diphenylmethylen und Diphenyldiazomethan in Carbonylcobalt-Komplexen Complex Chemistry of Reactive Organic Compounds, XXV [1] Stabilization of Diphenylmethylene and Diphenyldiazomethane in Carbonyl Cobalt Complexes  
 Abstract    Low temperature photolysis of (r/ 5 -C5H5)Co(CO)2 with diphenyldiazomethane in te-trahy drofurane yields [i -carbonyl -fi-diphenylmethylene -bis (r) 5 -cy clopentadienylcobalt) (Co-Co) and 
  Reference    Z. Naturforsch. 33b, 911—914 (1978); eingegangen am 5. Mai 1978 
  Published    1978 
  Keywords    H-Diphenylmethylene, /^-Diphenylmethylenehydrazido, Cobalt 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0911.pdf 
 Identifier    ZNB-1978-33b-0911 
 Volume    33 
4Author    JaapN. Louwen, Jaap Hart, DerkJ. Stufkens, Ad OskamRequires cookie*
 Title    The Hei and HeH Photoelectron Spectra of [Fe*? 3 -C3H5(CO)3X] and [Fe^ 3 -C4H7 (CO)3X] (X = Cl, Br, I) and [CoC3H5(CO)3]  
 Abstract    By means of UV photoelectron spectroscopy (UPS) the electronic structures of [Fe^3.C3H5(CO)3X], [Fe^3-(2-CH3C3H4)(CO)3X] (X = Cl, Br, I) and [Co(C3H5)(CO)3] have been studied. Detailed assignments are possible and surprisingly low ionization energies (as low as 8.19 eV) are found for iodine lone pair type Orbitals. From the spectra a large difference in n backbonding is found between the cobalt and iron complexes. 
  Reference    Z. Naturforsch. 37b, 179—185 (1982); received September 29 1981 
  Published    1982 
  Keywords    Photoelectron Spectra, Iron, Cobalt, Allyl Complexes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0179.pdf 
 Identifier    ZNB-1982-37b-0179 
 Volume    37 
5Author    Günter Schmid, Roland BoeseRequires cookie*
 Title    Azaborolinyl Complexes, IX [1] The Crystal and Molecular Structures of Two Isomers of Bis(l-ter£-butyl-2-methyl-??-l,2-azaborolinyl)cobalt  
 Abstract    The crystal and molecular structures of two isomers of bis(l-£er£-butyl-2-methyl-??-l,2-azaborolinyl)cobalt have been determined by single-crystal X-ray diffraction methods. Isomer 1 shows a clockwise, isomer 2 an anti-clockwise conformation of the azaborolinyl rings. In both compounds the azaborolinyl rings have staggered orientations with opposite positions of the tferi-butyl groups. The rings in 1 and 2 are slipped so that the three ring carbon atoms are closer to the cobalt atom than the BN groups. The staggered orientation of the ligands in 2 is probably due to a packing effect, as in similar sandwich complexes the anti-clockwise conformers show eclipsed orientation. 
  Reference    Z. Naturforsch. 38b, 485—492 (1983); eingegangen am 12. November 1982 
  Published    1983 
  Keywords    Azaborolinyl Sandwich Complexes, Cobalt, Isomers, X-Ray 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0485.pdf 
 Identifier    ZNB-1983-38b-0485 
 Volume    38 
6Author    RostislavD. Lampeka, Zam Ira, D. Uzakbergenova, VictorV. SkopenkoRequires cookie*
 Title    Spectroscopic and X-Ray Investigation of Cobalt(III) Complexes with 2-Oximinocarboxylic Acids  
 Abstract    Mixed complexes of Co(III) with 2-oximinopropionic (H 2A) or 2-oximino-3-phenylpropionic (H 2B) acid and different amine (imidazole, benzimidazole, pyridine, yS-picoline, y-picoline) are reported. Characterization of the complexes was based upon ele­ mental analysis, conductivity and JR, 'H N M R, and electronic absorption spectra, and X-ray diffraction analysis. The organic ligands behave as 0 ,N donors via the carboxyl oxygen and the oxime nitrogen atoms. A trans-octahedral structure has been assigned to the bis(2-oximino-carboxylato)bis(am ine)cobalt(III) on the basis of 'H N M R data. The crystal and molecular structures of the complexes rra«5-[bis(2-oximinopropionato)bis-(imidazole)]-(I) and ^ • a«5'-[bis(2-oximinopropionato)bis(pyridine)]cobalt(III) (II) were deter­ mined. I crystallizes in space group P 2/« with a = 14.167(2), b = 8.774(_1), c = 14.785(2)Ä, ß = 113.37(1)°, Z = 4, Dca)c = 1.568 g e m '3. II crystallizes in space group P 1 with a = 9.122(2), b = 10.038(2), c = 11.759(2) A, a = 69.95(1)°, ß = 67.47(2)°, y = 69.49(2)°, Z = 2, Dcalc = 1.547 g-cm~3. The structures were refined to unweighted R factors of 0.036 and 0.028, respec­ tively. The coordination sphere around Co is pseudo-octahedral with the 2-oxim inopropionato ligands occupying four equatorial positions, and the amines in axial po­ sitions. 
  Reference    Z. Naturforsch. 48b, 409—417 (1993); received November 2 1992 
  Published    1993 
  Keywords    Cobalt, Oximiocarboxylic Acid, Amine, X-Ray 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-0409.pdf 
 Identifier    ZNB-1993-48b-0409 
 Volume    48 
7Author    D. Osterloh, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis von SrCo2V 208 und SrCo2(A s0 4)2 On SrCo2V20 8 and SrCo2(A s 0 4)2  
 Abstract    SrCo2V20 8 (I) and SrCo2(A s 0 4)2 (II) were prepared by crystallization from melts and investigated by X-ray single crystal technique. (I) is isotypic to the SrNi2V 20 8-type and crys­ tallizes with tetragonal symmetry, space group Cly-14-icd, a = 12.267; c = 8 .4 2 4 Ä ; Z = 8. (II) is iso ty p ic to th e la te ly fo u n d S r N i2(P 0 4) 2, sp a c e g ro u p C J -P 1 , a = 5.713; b = 6.903; c = 9.417 A ; a = 110.48; ß = 101.43; 
  Reference    Z. Naturforsch. 49b, 923 (1994); eingegangen am 28. Februar 1994 
  Published    1994 
  Keywords    Strontium, Cobalt, Vanadium, Arsenic, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0923.pdf 
 Identifier    ZNB-1994-49b-0923 
 Volume    49 
8Author    D. Frerichs, Hk Müller-BuschbaumRequires cookie*
 Title    Ein Beitrag zur Kristallchemie von Verbindungen mit Johillerit-Struktur: On the Crystal Chemistry of Compounds with Johillerite Structure: KCo3 Cu(As2 5 8 V0 4 2 )O i2  
 Abstract    Single crystals of KCo3Cu(As2.58Vo42) 0 12 were prepared by solid state reactions below the melting point of the reaction mixture (K 2C 0 3, CuO, CoC20 4, V 20 5 and 3 A s20 5 -5 H 20) . It crystallizes with m onoclinic symmetry, space group C |h-C 2 lc, a = 12.207, b = 12.730, c = 6.811 A , ß = 113.69°, Z -4. The structure type is characterized by isolated twisted-square C u 0 4-polygons, C o 0 6-octahedra and a special 4+4-coordination o f the potassium ion. A s5+ and V*+ are in tetrahedral coordination with a partly statistical distribution of these ions. 
  Reference    Z. Naturforsch. 49b, 1463—1466 (1994); eingegangen am 13. Juni 1994 
  Published    1994 
  Keywords    Potassium, Cobalt, Arsenic, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1463.pdf 
 Identifier    ZNB-1994-49b-1463 
 Volume    49 
9Author    H. Szillat, Hk Müller-BuschbaumRequires cookie*
 Title    On the Oxocuprate (C u,C o)375Mo30 12  
 Abstract    Single crystals of (C u,C o)3 7?Mo30 12 have been prepared by recrystallization from melts and investigated by X-ray diffractometer techniques. TTie compound crystallizes with ortho-rhombic symmetry, space group D'2 6 h-P n m a , a = 5.092(1), b = 10.624(3), c = 17.804(4) A, Z = 4 and is isotypic to NaCo2.3iMo30 12. The crystal structure is discussed and it is shown, that the trigonal prismatically coordinated copper positions are occupied in a different m an­ ner. One of the alternate sites is beside the centre of the prisms, and the other one is shifted towards one of the faces of the rectangular prism. This detail may be interpreted by assigning the valance states C u1 and Cu11. The M 0 6 octahedra are occupied statistically by copper and cobalt. 
  Reference    Z. Naturforsch. 50b, 707—711 (1995); eingegangen am 10. O ktober 1994 
  Published    1995 
  Keywords    Crystal Structure, Copper, Cobalt, Molybdenum, Oxide 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0707.pdf 
 Identifier    ZNB-1995-50b-0707 
 Volume    50 
10Author    N., Silke Busche, Karsten BluhmRequires cookie*
 Title    Synthese und Kristallstruktur der ersten zinkhaltigen Pyroborate  
 Abstract    ii,5Z n 0,5(6 2 0 5) UI,d C o ^ Z n o ^ I ^ O s) Synthesis and Crystal Structure of the First Zinc Containing Pyroborates Nii.5Z n0.5(B2O 5) and Coj 5Z n0.5(B2O 5) The first zinc containing pyroborates Ni! sZ n ^ B ^ O s) (A) and 5Zn0 5(B 2O 5) (B) were prepared by using a B20 3 flux technique. Single crystals were investigated by X-ray diffrac­ tion and showed triclinic symmetry, space group C j-P l. The structures are isotypic to C o9(B 20 5) with the lattice parameters (A) « = 331.28(6), 6 = 613.87(11), c = 922.2(2), a = 104.067(11) °, ß = 90.672(13) °, y = 92.413(12) 0 and (B) 0 = 315.89(2), 6 = 612.84(6), c = 927.72(6), a = 104.103(7) °, ß = 91.020(6) °, y = 92.540(7) °, Z = 2. All metal point positions show an octahedral oxygen coordination and a partly statistical distribution o f Zn2+ and N i2+ or C o2+, respectively. Isolated nearly planar B20 5 units connect ribbons consisting o f edge sharing metal octahedra. 
  Reference    Z. Naturforsch. 50b, 1445—1449 (1995); eingegangen am 25. April 1995 
  Published    1995 
  Keywords    Zinc, Nickel, Cobalt, Pyroborate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1445.pdf 
 Identifier    ZNB-1995-50b-1445 
 Volume    50 
11Author    AnneU. Tzolino, K. Arsten BluhmRequires cookie*
 Title    Synthese und röntgenographische Charakterisierung von zwei neuen Verbindungen des Ludwigit-Strukturtyps: Co5Sn(B0 3)2 0 4 und Co5Mn(B0 3 )20 4  
 Abstract    Synthesis and X -R ay C haracterization o f Two New Com pounds with Ludw igite-Structure: C o5S n (B 0 3)20 4 and C o5M n (B 0 3)20 4 The compounds Co5Sn(B 03)20 4 (I) and Co5M n(B03)20 4 (II) were prepared by using a B20 3 flux technique. Single crystals were investigated by X-ray diffraction and showed orthorhombic symmetry, space group D2h-Pbam (No. 55), I a = 944.4; b = 1233.8; c = 310.5 pm; Z = 2 and II a = 925.07; b = 1241.67; c = 305.24 pm; Z = 2. Both compounds are isotypic to the mineral Ludwigite. All metal point positions show an octahedral oxygen coordination. Co2+ and M4+ (M = Sn or Mn) occupy one point position statistically. Both structures contain isolated, trigonal planar B 0 3 units and oxygen atoms that are not coordinated to boron. 
  Reference    Z. Naturforsch. 51b, 305—308 (1996); eingegangen am 28. September 1995 
  Published    1996 
  Keywords    Cobalt, Tin, Manganese, Borate Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0305.pdf 
 Identifier    ZNB-1996-51b-0305 
 Volume    51 
12Author    Hk Müller-Buschbaum, H. ÜnsalRequires cookie*
 Title    On Ba6Pr2C o4O i5 and Ba5SrPr2C o40 15  
 Abstract    Ba6Pr2Co40 15 (I) and Ba5SrPr2Co40 15 (I I) have been prepared by high temperature C 0 2-L A S E R techniques. Both compounds crystallize with hexagonal symmetry, space group C£v-P63mc, (I): a = 11.814(1), c = 7.100(2) A ; (II): a = 11.646(1), c = 6.8602 A , Z = 2. It is remarkable that the strongly reducing Pr3+ can coexist with the more oxidizing Co3+. 
  Reference    Z. Naturforsch. 51b, 453—455 (1996); eingegangen am 2. Oktober 1995 
  Published    1996 
  Keywords    Barium, Cobalt, Praseodym, Oxygen, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0453_n.pdf 
 Identifier    ZNB-1996-51b-0453_n 
 Volume    51 
13Author    B. W. Edel, HkM. Üller-B, UschbaumRequires cookie*
 Title    Über die Kristallstrukturen der Tellurate Pb3Fe2Te20 12 und Pb2CoTe06  
 Abstract    Pb3Fe2Te20 |2 (I) and Pb2C oT e06 (II) have been prepared by crystallization from melts. Single crystal X-ray investigations led to monoclinic (I) and tetragonal (II) symmetry, space groups Cs-Cc and D{J-I4/mmm. Lattice constants I: a = 9.866(3), b = 15.332(4), c = 7.172(2) A, ß = 111.34(3)°, Z = 4. II: a = 5.661(5), c = 8.004(7) A, Z = 2. (I) represents a new crystal structure, characterized by a network of octahedra occupied by Fe + and Te6+ in a disordered manner. The centres of negative charge of the lone pairs of Pb2+ in I are estimated by Coulomb term calculations. II belongs to the elpasolithe type. 
  Reference    (Z. Naturforsch. 52b, 35—39 [1997]; eingegangen am 2. September 1996) 
  Published    1997 
  Keywords    Lead, Iron, Cobalt, Tellurium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0035.pdf 
 Identifier    ZNB-1997-52b-0035 
 Volume    52 
14Author    Hk Wulff, Müller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie der Kupfer(II)-ZinkteIlurate Cu5 Zn4Te3 0 18  
 Abstract    Cuj^Znj^TeOg, mit einer Notiz über Cul95Co1?5T e06 On the Crystal Chemistry of the Copper(II) Zinc Tellurates Cu5Zn4Te30 ,8 and Cu, 5Zn, 5Te06 with a Note on Cu, 5Co, 5Te06 L. Single crystals of Cu5Zn4Te30 , 8 (I), Cu, 5Zn, 5Te06 (II) and Cu, 5Co, 5Te06 (III) have been prepared and investigated by X-ray work. The structure of (I) was solved in the monoclinic space group C^-C2, a = 14.834(2), b = 8.801(1), c = 10.375(2) Ä, ß = 93.27(2)°, Z = 4. (II) and (III) crystallize with cubic symmetry, space group Th-Ia3, a{U) = 9.557(1), a(III) = 9.570(1) Ä, Z = 8. (I) shows a complicated structure formed by Te06 octahedra isolated from each other, Zn20 6 double tetrahedra and Zn20 8 double square pyramids. These polyhedra are incorporated into a network of edge and corner connected stretched C u06 octahedra. (II) and (III) are isotypic to Cu3T e06 and have a (Cu/M)30 6 octahedra network, statistically occupied by Cu2+ and Zn2+ or Cu_+ and Co2+. 
  Reference    (Z. Naturforsch. 53b, 53—57 [1998]; eingegangen am 27. Oktober 1997) 
  Published    1998 
  Keywords    Copper, Zinc, Cobalt, Tellurate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0053.pdf 
 Identifier    ZNB-1998-53b-0053 
 Volume    53 
15Author    Hans-Friedrich Klein, Alexandra Brand, Gerhard CordierRequires cookie*
 Title    Synthesis and Reactions with CO and C2H4 of Cobalt(I) Complexes Containing Trimethylphosphine and Chelating o-Diphenylphosphanyl- phenolate Ligands  
 Abstract    In tetracoordinate cobalt(I) halide compounds CoX(Ph2P ^ O H)(P M e3)2 (X = CI, Br) o-phos-phanylphenols PhaP^O H are coordinated as phosphane ligands. In the presence o f base chelat­ ing anions Ph2P ^ O _ give rise to pentacoordinate com plexes Co(Ph2 P ^ O)(P M e3)3. M olec­ ular structures are presented for both types o f compounds. The five-membered chelate ring in Co(Ph2P ^ O)(P M e3)3 is resistant to protonation, and ring-opening is not observed in the presence o f CO or C2H4. Replacing one o f the trimethylphosphanes by one o f the 7r-acceptor ligands affords fiuxional com plex m olecules which upon cooling attain definite ground-state geometries out o f a multitude o f possible isomers. 
  Reference    Z. Naturforsch. 53b, 307 (1998); received November 28 1997 
  Published    1998 
  Keywords    Cobalt, o-Phosphanylphenolate Complexes, Synthesis, Structure, Fluxionality 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0307.pdf 
 Identifier    ZNB-1998-53b-0307 
 Volume    53 
16Author    M. Staack, Hk Miiller-BuschbaumRequires cookie*
 Title    Kristallchemische Beziehungen von Co6 0 2  
 Abstract    [Te0 4 (CoAs0 5)2 ] zur Steinsalzstruktur von CoO mit einem Beitrag über magnetische Messungen an Co60 2[Te04(C oA s05)2] Crystal Chemical Relations o f Co60 2[T e04(C o A s0 5)2] to the Rocksalt Structure of CoO and a Contribution on M agnetic Measurements of Co60 9[T e04(C o A s0 5)-,] The recently investigated compound Co60 2[Te04(C oAs05)2 marks the first occurrence of a tellurate-arsenate additionally revealing the hitherto unknown pyro-cobaltoarsenate group CoAsO?. One oxygen is exclusively connected to octahedrally coordinated cobalt. It is shown that the structure of Co60 2[Te04(C oAs05)2] can be derived step by step from the rock salt structure of CoO. Magnetic measurements using the Faraday technique reveal Curie-Weiss behaviour between 88 and 325 K. Low temperature measurements by a SQUID magnetometer show antiferromagnetism and a relatively low NEEL temperature of 5 K compared to other Co(II) compounds. 
  Reference    Z. Naturforsch. 53b, 1109—1114 (1998); eingegangen am 12. Juni 1998 
  Published    1998 
  Keywords    Cobalt, Tellur, Oxide-Arsenate, Magnetism, Structure Relations 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1109.pdf 
 Identifier    ZNB-1998-53b-1109 
 Volume    53 
17Author    Jutta Knaudta, Stefan Försterb, Ulrich Bartsch3, Anton Riekerb, Ernst-G JägeraRequires cookie*
 Title    Catalytic Oxidation of a Trialkyl-Substituted Phenol and Aniline with Biomimetic Schiff Base Complexes  
 Abstract    The catalytic oxidation of 2,4.6-tri-f6rr-butylphenol and 2,4,6-tri-te/-r-butylaniline with mo­ lecular oxygen and rerf-butylhydroperoxide was investigated using biomimetic Mn-, Fe-and Co-complexes as catalysts. The catalytic activity and product distribution were determined and compared with those observed in the reactions of the well-known Co(salen) complex. 
  Reference    (Z. Naturforsch. 55b, 86—93 [2000]; received Septem ber 22 1999) 
  Published    2000 
  Keywords    Biomimetic Catalysts, Oxidation, Macrocycles, Manganese, Iron, Cobalt 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0086.pdf 
 Identifier    ZNB-2000-55b-0086 
 Volume    55 
18Author    Werner Buchholz, Hans-Uwe SchusterRequires cookie*
 Title    Die Verbindungen MgFe6Ge6 und LiCo6Ge6 The Compounds MgFeßGee and LiCoöGee  
 Abstract    The hexagonally crystallizing compounds MgFeeGeß and LiCoeGeß were prepared and structurally characterized by single crystal investigations. The lattice constants are a = 506.7 pm, c — 804.5 pm, c/a—1.58s for MgFe6Ge6 and a = 504.8 pm, c = 772.9 pm, c/a = 1.53i for LiCoßGee. The structures (space group P6/mmm) are closely related to the structure of LiFeeGe6 and the B35-type structure of FeGe. 
  Reference    Z. Naturforsch. 33b, 877—880 (1978); eingegangen am 26. Mai 1978 
  Published    1978 
  Keywords    Ternary Germanium Compounds, Magnesium, Iron, Lithium, Cobalt, Crystal Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0877.pdf 
 Identifier    ZNB-1978-33b-0877 
 Volume    33 
19Author    WolfgangA. Herrmann, Ilona SchweizerRequires cookie*
 Title    Übergangsmetall-Methylen-Komplexe, VI [1] Zur irreversiblen -Methylen/Carbonyl-Isomerie zweikerniger Cobalt-Komplexe mit bifunktionellen Methylen-Liganden Transition Metal Methylene Complexes, VI [1] On the Irreversible //-Methylene/Carbonyl Isomerization of Binuclear Cobalt Complexes with Bifunctional Methylene Ligands  
 Abstract    Ethyl diazoacetate (2 a) and £erZ-butyl diazoacetate (2 b) are converted into the metal stabilized, doubly bridging alkoxycarbonyl carbenes upon photolysis with (r? 5 -C5H5)Co(CO)2 (1) in tetrahydrofurane at —110°C. Although the yields of //-dicarbonyl-/(-ethoxy-carbonylmethylene-bis(?7 5 -cyclopentadienylcobalt) (3 a) and the corresponding ieri-butyl derivative (3b) are low, both compounds attract considerable attention due to an un-expected and hitherto unknown irreversible carbonyl bridge opening process with concomitant //-methylene rearrangement. These isomerizations have been established by IR and 1 H NMR methods to be first order intramolecular processes. 
  Reference    Z. Naturforsch. 33b, 1128—1135 (1978); eingegangen am 6. Juli 1978 
  Published    1978 
  Keywords    /<-Alkoxycarbonylmethylene, Terminal/Bridging Carbonyl Groups, Cobalt, IR, X H NMR 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1128.pdf 
 Identifier    ZNB-1978-33b-1128 
 Volume    33 
20Author    Peter KlüfersRequires cookie*
 Title    Die Kristall-und Molekülstrukturen der  
 Abstract    Verbindungen [Cl4_xSn{C o(C O)4}xl mit x = 1 ,2 und 3 The Crystal and M olecular Structures of the Compounds [Cl4_vSn{Co(CO)4} v] with x = 1,2 and 3 The crystal structures o f the com pounds [Cl3SnCo(CO)4] 1, [Cl2Sn{C o(C O)4} 2] 2, and [C lSn{C o(C O)4}3] 3, have been determined by X-ray crystallography. Sn is co-ordinated 
  Reference    Z. Naturforsch. 46b, 187—191 (1991); eingegangen am 16. Juli 1990 
  Published    1991 
  Keywords    Tetracarbonylcobaltio-chloro-stannanes, Tin, Cobalt, Carbonyl, X -R ay Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0187.pdf 
 Identifier    ZNB-1991-46b-0187 
 Volume    46