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1Author    G. J. Hill, J. M. Keartland, M.J R HochRequires cookie*
 Title    Pressure Dependence of the EFG in Semimetallic Arsenic and Antimony  
 Abstract    The pressure variation of the axial EFG at the ion sites in semimetallic arsenic and antimony, at am-bient temperature, has been investigated using pulsed NQR. A weakly nonlinear decrease of the EFG is observed in both systems. The data are analyzed in terms of the lattice contribution to the EFG, which involves a lattice of point monopoles immersed in a uniform, compensating, background charge. The pressure dependence of the EFG obtained from the present measurements is far weaker than the pres-sure dependence of the calculated lattice contribution. Our results support previous suggestions that va-lence effects are important in determining the EFG in these semimetals. 
  Reference    Z. Naturforsch. 53a, 501—503 (1998); received March 24 1998 
  Published    1998 
  Keywords    EFG, NQR, Arsenic, Antimony, Pressure 
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 TEI-XML for    default:Reihe_A/53/ZNA-1998-53a-0501.pdf 
 Identifier    ZNA-1998-53a-0501 
 Volume    53 
2Author    HerbertW. Roesky, Georg SidiropoulosRequires cookie*
 Title    Arsenhaltige Heterocyclen Heterocycles Containing Arsenic  
 Abstract    In the reaction of N,N'-bis-trimethylsilyl-dimethylurea with As[N(CH3)2]3 a four membered ring 0 = C(NCH3)2AsN(CH3)2 1 could be isolated. 1 was not obtained by cleavage of the Si-N-bonds with the corresponding chloride. In contrast CH3N[CONCH3Si(CH3)3]2 reacts with AsCb to yield the six-membered ring CH3N(CON-CH3)2ASC1 2. The four-membered ring which contains an arsenic-halogen bond seems to be unstable. In the adamantane-type compound, AS4(NCH3)6, one methylamine could be eliminated by CF3SO3H to give AS4(NCH3)5(OS02CF3)2 3. X H, 19 F NMR as well as mass spectroscopy have been used in the characterization of the products obtained. 
  Reference    Z. Naturforsch. 33b, 756—758 (1978); eingegangen am 24. April 1978 
  Published    1978 
  Keywords    Cyclic Compounds, Arsenic, Small Rings 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0756.pdf 
 Identifier    ZNB-1978-33b-0756 
 Volume    33 
3Author    FrancisL. Tanzella, Neil BartlettRequires cookie*
 Title    Quantitative Synthesis of (C6H5)2AsF2+AsF6-and (C6H5)2A8F3 via Interaction of Benzene with Arsenic Pentafluoride  
 Abstract    Benzene reacts quantitatively with AsFs to give (C6H5)2AsF2 + AsF6-, the first reported aryl or alkyl fluoroarsonium(V) salt. This reacts quantitatively with CsF to give (CeH5)2AsF3 and CsAsF6. Interaction of (C6H5)2AsF3 with AsF5 reconstitutes the fluoro-arsonium salt. Variable temperature 19 F NMR studies show (CÖHS^ASFS to be a rigid trigonal bipyramid, with the phenyl groups in equatorial positions. 
  Reference    Z. Naturforsch. 36b, 1461—1464 (1981); received May 18 1981 
  Published    1981 
  Keywords    Arylfluoroarsonium, Arsenic, Benzene, Substitution 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1461.pdf 
 Identifier    ZNB-1981-36b-1461 
 Volume    36 
4Author    D. Frerichs, C. H. Park, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis der Tief-und Hochtemperaturform eines Oxidarsenats des Zinks: Zn0Z n3(A s0 4)2 On the Low and High Temperature Form o f an Oxidearsenate of Zinc: Z n 0 Z n 3( A s 0 4)2  
 Abstract    Single crystals of the low (t-) and high (h-) temperature form o f Z n 0 Z n 3(A s 0 4)2 have been prepared by flux and by C 0 2-L A SER techniques respectively. Both compounds crystal­ lizes monoclinic, space group C2h-P2;/n with the lattice parameters t-Z n 0 Z n 3(A s 0 4)2: a = 9.807(3), b = 8.180(2), c = 9.967(2) A , ß = 116.53(2)°, Z = 4 and h -Z n 0 Z n 3(A s 0 4)2: a = 9.743(3), b = 8.163(8), c = 17.933(2) A , ß = 91.55(2)°, Z = 8. Similarities and differences of the crystal structures will be discussed. 
  Reference    Z. Naturforsch. 51b, 233 (1996); eingegangen am 10. Juli 1995 
  Published    1996 
  Keywords    Zinc, Arsenic, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0233.pdf 
 Identifier    ZNB-1996-51b-0233 
 Volume    51 
5Author    D. Frerichs, C. H. Park, HkM. Üller-B, UschbaumRequires cookie*
 Title    Zur Kenntnis zweier Formen des Zinkorthoarsenates: a-Z n 3(A s04)2 und /3-Zn3(A s0 4)2 On Two Forms o f Zinc O rthoarsenate: a -Z n 3(A s 0 4)2 and /3-Zn3(A s 0 4)2  
 Abstract    Single crystals of two forms of zinc orthoarsenate (a-Z n3(A s04)2 (I) and /3-Zn3(A s04)2 (II)) have been prepared by flux techniques. Both compounds crystallize monoclinically, space groups (I): Cih-P2l/c, (II): Cih-P21/n, with the lattice parameters (I): a = 6.306(2), b = 8.652(2), c = 'ol 1.321(4) A, ß = 92.25(5) °, Z = 4 and (II): a = 5.281(1), b = 8.494(2), c = 7.726(3) A, ß = 96.39(3)°, Z = 2. ct-Zn3(A s04)2 is isotypic to I-Cu3(A s04)2 and ß-Zn3(A s04)2 to 7-Zn3(P 0 4)2. Similarities and differences of the crystal structures are discussed. 
  Reference    Z. Naturforsch. 51b, 333—337 (1996); eingegangen am 31. August 1995 
  Published    1996 
  Keywords    Zinc, Arsenic, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0333.pdf 
 Identifier    ZNB-1996-51b-0333 
 Volume    51 
6Author    Hans-Uwe Schuster, Sandör RozsaRequires cookie*
 Title    Darstellung und Struktur von K2PdAs2 Preparation and Structure of K2PdAs2  
 Abstract    K2PdAs2 was prepared from the elements. It crystallizes orthorhombically, space group Cmcm, a = 653.6 pm, 6= 1412.1pm, c = 602.5 pm, forming infinite Pd-As2-zig-zag-ribbons and conforming to a filament. 
  Reference    Z. Naturforsch. 34b, 1167—1168 (1979); eingegangen am 15. Mai 1979 
  Published    1979 
  Keywords    Ternary Compound, Potassium, Palladium, Arsenic, Crystal Data 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1167_n.pdf 
 Identifier    ZNB-1979-34b-1167_n 
 Volume    34 
7Author    Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. SheldrickRequires cookie*
 Title    Darstellung und Kristallstruktur vom Arsen(III)arsen(V)oxidhydroxid As305(0H) Preparation and Crystal Structure of the Arsenic(III) Arsenic(V) Oxide Hydroxide As305(0H)  
 Abstract    The title compound was prepared by heating the hydrolysis products of AS2O4 in a sealed tube. The crystal structure was determined and refined to R = 0.058 [P2j./c, a = 1250.4(6), b = 459.3(2), c = 1097.6(6) pm, ß = 118.08(5)°, Z = 4]. The structure consists of infinite layers, containing pyramidal As(III)03 and tetrahedral As(V)04 groups, and stabilised by hydrogen bonding. 
  Reference    Z. Naturforsch. 37b, 138—140 (1982); eingegangen am 7. Oktober 1981 
  Published    1982 
  Keywords    Sealed-Tube Synthesis, Crystal Structure, Arsenic, Oxide 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0138.pdf 
 Identifier    ZNB-1982-37b-0138 
 Volume    37 
8Author    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 
9Author    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 
10Author    Park, K. Arsten BluhmRequires cookie*
 Title    Pb6(A s0 4)  
 Abstract    [B (A s04)4] -ein neuartiger Kristallstrukturtyp im System Pb0 /B2 0 3 /As2 0 5 mit einem Beitrag über P b(B A s05) Pb6(A s 0 4)[B (A s 0 4)4] -a New Crystal Structure Type in the System P b 0 /B 20 3/A s20 3 w ith R em arks about P b (B A s0 5) C heong- Single crystals of Pb6(A s04)[B(As04)4] (I) and Pb(BAs05) (II) were obtained by melting B->03, As20 5 and PbO at 800 °C. X-ray investigation led to the space group (I): S4 -P4 (Nr. 81) with a = 715.4(1), c = 976.2(3) pm, Z = 1 and (II): C | -P3, (Nr. 144) with a = 712.2(1), c = 693.5(2) pm, Z = 3. While (II) is isotypic to the Stillwellite structure, Pb^(As04)[B(As04)4] represents a completely novel type of crystal structure. Boron and arsenic are tetrahedrally coordinated by oxygen. These polyhedra form two kinds of isolated anions: A s04'~ and B(A s04)49_. Lead is eightfold coordinated by oxygen. 
  Reference    Z. Naturforsch. 51b, 313—318 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Lead, Arsenic, Borate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0313.pdf 
 Identifier    ZNB-1996-51b-0313 
 Volume    51 
11Author    Z., D. Frerichs, Hk Müller-BuschbaumRequires cookie*
 Title    Synthesis and Crystal Chemistry o f the /3-Form o f a M ixed Zinc Orthoarsenate  
 Abstract    Single crystals o f Zn228M g0 72(A s 0 4) 2 have been prepared by C 0 2 L A S E R techniques. The compound crystallizes with monoclinic symmetry space group C 2h-P2j/n and the lattice parameters a = 5.292(2), b = 8.450(3), c = 7.737(3) Ä , ß = 96.33(3)°, Z = 2. Zn2 28M g072(A s O 4) 2 is isotypic to /3-Zn3(A s 0 4)2. The formation of the /3-Zn3(A s 0 4) 2 struc­ ture instead o f other possible orthoarsenates is discussed. 
  Reference    Z. Naturforsch. 51b, 469—472 (1996); eingegangen am 2. Oktober 1995 
  Published    1996 
  Keywords    Zinc, Magnesium, Arsenic, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0469.pdf 
 Identifier    ZNB-1996-51b-0469 
 Volume    51 
12Author    C. Wadewitz, Hk Müller-BuschbaumRequires cookie*
 Title    Strukturelle Unterschiede zwischen Sr2(V 0)(A s04)2 und Ba2(V 0)(P 04)2 Strucural Differences between Sr2(V 0 )(A s0 4)2 and Ba2(V 0 )(P 0 4)2  
 Abstract    Two new alkaline earth vanadyl compounds, Sr2(V 0)(A s 0 4)2 (I) and Ba2(V 0)(P 0 4)2 (II), have been prepared by solid state reactions in closed quartz tubes and characterized by sin­ gle crystal X-ray diffraction methods. Crystal data: (I): monoclinic, C ,h -12/a, a = 6.873(2), b = 16.307(4), c = 7.196(2) A, ß = 115.67(2), Z = 4; (II): monoclinic, C^-I2, a = 9.471(2), b = 5.443(1), c = 16.972(4) Ä, ß = 101.65(2), Z = 4. (I) is isotypic to Sr2(V 0)V 20 8 and Sr2(V 0)(P 0 4)2. (II) shows significant differences to the strontium compounds as well as to Ba2(V 0)(V 0 4)2. The differences of the crystal chemistry and the similarity of (II) to Ba2(V 0)(P 0 4)2 H20 are discussed. 
  Reference    Z. Naturforsch. 51b, 1290—1294 (1996); eingegangen am 26. April 1996 
  Published    1996 
  Keywords    Barium, Strontium, Vanadium, Phosphorus, Arsenic, Oxygen, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1290.pdf 
 Identifier    ZNB-1996-51b-1290 
 Volume    51 
13Author    Klaus Megges, EvgeniV. Avtomonov, Jörg LorberthRequires cookie*
 Title    Darstellung und Kristallstrukturbestimmung von l,2-Di-f-butyl-l,2-diiodo- diarsan (f-C4H9AsI)2 und Synthese von l,2,3,4-Tetrakis(/-butyl)tetraarsetan (/-C4H9As)4 über selektive Reduktion von f-Butylarsendiiodid f-C4H9AsI2 Synthesis and Crystal Structure of l,2-Di-/-butyl-l,2-diiododiarsane (f-C4H9AsI)2 and Synthesis of l,2,3,4-Tetrakis(/-butyl)tetraarsetane (f-C4H9As)4 via Selective Reduction of r-Butylarsenic Diiodide r-C4H9AsI2  
 Abstract    1,2,3,4-Tetrakis(/-butyl)tetraarsetane (r-C4HyAs)4(4) has been synthesized by reduction of f-butylarsenic (III) diiodide (1) with equivalent quantities of either Mg, Ca, Zn, Li, or CoCp2 in THF at low temperatures in high yields. Treatment of 1 with CoCp2 in a molar ratio 1:1 in n-pentane at -78 °C leads to the formation of l,2-di-r-butyl-l,2-diiododiarsine (2) (/-C4H9AsI)2 in 69 % yield. The products have been characterized by spectroscopic methods (H, l3C-NMR, EI-MS) and elemental analyses. The crystal structure of 2 has been determined by X-ray diffraction methods. 
  Reference    Z. Naturforsch. 52b, 790—794 (1997); eingegangen am 24. April 1997 
  Published    1997 
  Keywords    Arsenic, Arsenic Iodides, Alkylarsenic Compounds, Arsetane, Diarsines 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0790.pdf 
 Identifier    ZNB-1997-52b-0790 
 Volume    52 
14Author    *. Sonderdruckanforderungen, ProfK. Dr, DehnickeRequires cookie*
 Title    D ie Kristallstruktur von Bis(bromo  
 Abstract    -triphenyl)arsen(V)-hexabromo-tellurat(IV), [Ph3A sB r]2[TeBr6] Crystal Structure o f B is(brom otriphenyl)-arsen ic(V)-h exab rom otellu rate(IV), [Ph3A sB r]2[TeBr6] S oheila Chitsaz, Bernhard N eum üller, Kurt D eh nick e* Yellow-orange single crystals of [Ph3AsBr]2[TeBr6] have been prepared from satu­ rated solutions of Ph3AsBr2 and TeBr4 in aceto­ nitrile and characterized by a crystal structure de­ term ination. Space group R3c, Z = 12, lattice di­ mensions at -7 0 °C: a = b = 1337.9(2), c = 7953.8(4) pm, R = 0.0691. The structure consists of discrete ions [Ph3A sBr]+ and nearly perfectly octahedral [TeBr6]2-. 
  Reference    Z. Naturforsch. 54b, 1092—1094 (1999); eingegangen am 28. Mai 1999 
  Published    1999 
  Keywords    Arsenic, Tellurium, Bromo Complex, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1092_n.pdf 
 Identifier    ZNB-1999-54b-1092_n 
 Volume    54 
15Author    Bernhard Neumüller, Soheila Chitsaz, Kurt DehnickeRequires cookie*
 Title    Die Kristallstrukturen von Ph3AsCI2 und /?-Ph3AsBr2 Crystal Structures of Ph3AsCl2 and ß-Ph3AsBr2  
 Abstract    Colourless single crystals of Ph3A sC l2 as well as of /?-Ph3AsBr2 were obtained from acetonitrile solutions and were suitable for X-ray structure determinations. Ph3AsCl2: Space group P212121, Z = 4, lattice dimensions at -90 °C: a = 1247.9(2), b = 
  Reference    Z. Naturforsch. 54b, 1611—1614 (1999); eingegangen am 23. August 1999 
  Published    1999 
  Keywords    Arsenic, Triphenylarsenic Dichloride, Triphenylarsenic Dibromide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1611_n.pdf 
 Identifier    ZNB-1999-54b-1611_n 
 Volume    54 
16Author    Z. NaturforschRequires cookie*
 Title    S o lv a to  
 Abstract    th erm a le D a r ste llu n g u nd S tru k tu r v o n [M e 4N ] 2[A s 6S 10] und [M e 4N ] 2 [A s 4S 7 ], d e m er ste n T h io a r se n a t(III) m it A s S 4 tr ig o n a len B ip yram id en S o lv a to th e rm a l S y nthesis an d S tru c tu re o f th e T h io a rs e n a te s (III) [M e4N ]2[A s6S 10] a n d [M e4N ]2[A s4S7], th e F irst T h io a rs e n a te (III) w ith ¥/-A sS 4 T rigonal B ip y ram id s V io la V ater, W illiam S. S held rick * The tetramethylammonium thioarsenate(III) [Me4N]2[As6S 10] (1) has been prepared toge­ ther with the minor product [Me4N]2[As4S7] (2) by reaction of [Me4N]Cl with As2S3 and Na2S in acetonitrile at 115 °C. The polymeric anion of 1 consists of adjacent i[A s3S5'] chains linked together into a i[A s6S102"] double chain through planar As2S2 rings involving As atoms of every second constituent ring-shaped A s3S6 building unit. A relatively undistorted V'-AsS4 trigonal bipyramidal geometry is observed for the participating As atoms. Individual A s3S6 units are linked by bridging AsS3 pyramids into the zweier single chains i[A s4S72"] in 2. 
  Reference    Z. Naturforsch. 52b, 1119—1124 (1997); eingegangen am 17. Juni 1997 
  Published    1997 
  Keywords    Arsenic, Sulfur, Thioarsenates(III), Solvatothermal Synthesis, Structure-Direction 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1119.pdf 
 Identifier    ZNB-1997-52b-1119 
 Volume    52 
17Author    Viola Vater, WilliamS. SheldrickRequires cookie*
 Title    Solventothermal Synthesis and Structure of the Polymerie Thioarsenates(III) (Et4N)2As6S10 and (Et4N)2As8S13  
 Abstract    Reaction o f (Et4N)C l with AS2S3 and NaaS in acetonitrile at 110°C affords the polym eric thioarsenate(III) (E u N ^ A söS io in which the cyclic [ A s . ^ ] 3-and chainlike [AS3S7]5-trinu-clear molecular building units are linked together through comm on sulphur atoms into infinite double chains. In contrast, reaction o f the same starting materials at higher temperatures (1 80°C) in water leads to formation o f a markedly denser phase (E u N ^ A ss S o , w hose thioarsenate(III) [A sgSi32—] anions exhibit a higher condensation grade. These likew ise double chains are com posed o f cyclic [AS3S6]3-and dinuclear [A s2Ss]4~ units with shared ip-AsS_^ tetrahedra corners. A nalogous treatment o f (Et4N)Cl with A s2Se3 and Na2Se in acetonitrile (T =l 10°C) yields (Et4N)[S eA sS e7]. 
  Reference    Z. Naturforsch. 53b, 1259 (1998); received July 7 1998 
  Published    1998 
  Keywords    Arsenic, Sulphur, Thioarsenates(III), Solventothermal Synthesis, Chain Structures 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1259.pdf 
 Identifier    ZNB-1998-53b-1259 
 Volume    53 
18Author    Frank Edelmann, Claudia Spang, HerbertW. Roesky, PeterG. JonesRequires cookie*
 Title    Synthese und Struktur des ersten dreigliedrigen Arsen—Phosphor—Platin-Ringes Synthesis and Structure of the First Three-Membered Ring Containing Arsenic, Phosphorus and Platinum  
 Abstract    -butylphenylphosphane reacts with CpFe(C,H4AsCl2) in the presence of DBU to yield CpFe[C5H4As=PC6H2(f-Bu)?l. The reaction of this arsaphosphene with (Ph3P)2PtC2H4 yields CpFe[C5H4As—P[C6H2(r-Bu)3]Pt(PPh3)2], a compound with a three-membered ring containing arsenic, phosphorus and platinum. 
  Reference    Z. Naturforsch. 43b, 517—520 (1988); eingegangen am 5. Januar 1988 
  Published    1988 
  Keywords    X-Ray, NMR Spectra, Phosphorus, Arsenic, Platinum 2, 4, 6-Tri 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0517.pdf 
 Identifier    ZNB-1988-43b-0517 
 Volume    43