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1	Author	Norbert Kuhn, Joanna Fahl, Riad Fawzi, Cäcilia Maichle-Mößmer, Manfred Steimann	Requires cookie*
	Title	Stable Carbene Adducts of Chlorine [1]
	Abstract	The carbene adducts 3a-c (R 1 = Me, Et, iso-Pr; R2 = Me) are formed from the 2,3-dihydro-imidazol-2-ylidenes la-c and 1,2-dichloroethane as air-sensitive solids in good yields. The compounds exhibit a reactive Cl-Cl bond. Benzene is chlorinated by 3a,b to give chlorobenzene and the imidazolium salts 10a,b under mild conditions. 3c acts as a chloride donor to give with AICI3 and S 0 2 the 2-chloroimidazolium salts 12c andl3c (X = A1C14, S 0 2C1). On hydrolysis, the less reactive hydrate salt 14c is formed from 3c. The X-ray structures of 10a and 14c are reported.
	Reference	Z. Naturforsch. 53b, 720—726 (1998); eingegangen am 23. Februar 1998
	Published	1998
	Keywords	Carbene, Chlorine, X-Ray Data
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	TEI-XML for	default:Reihe_B/53/ZNB-1998-53b-0720.pdf
	Identifier	ZNB-1998-53b-0720
	Volume	53

2	Author	Henri Brunner1, ManfredM. Uschiol3, Thomas Neuhierl3, Bernhard Nuberb	Requires cookie*
	Title	Copper Complexes with the Ligand [Cp2MoH2]
	Abstract	The reaction of CuCl with [CP2M0H2] yields the complex [Cu(Cp2M oH2)2Cl]. An X-ray structure analysis shows that the coordination of the copper(I) ion by two [CP2M0H2] lig ands and the chloride ion is pseudo-trigonal planar. The hydride ligands were located by using difference Fourier methods. A manifold of reactions took place when an aqueous so lution of CUSO4 was treated with a solution of [Cp2M oH 2] in dichloromethane in a 1:2 molar ratio. The X-ray structure analysis established a polymeric structure of the complex [Cu(Cp2MoH2)2Cu(Cp2M oH2)S0 4 ]" with two different copper centers.
	Reference	Z. Naturforsch. 54b, 337—340 (1999); received September 25 1998
	Published	1999
	Keywords	Copper, Molybdenum, X-Ray Data
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-0337.pdf
	Identifier	ZNB-1999-54b-0337
	Volume	54

3	Author	R. En, C. Su, PetraD. Örrb, M. Artin, K. Ühnb, ClausK. Rieger0, M. Ikhael, Y. A. Ntip In D	Requires cookie*
	Title	Chiral Pool Synthesis of 4a-Substituted Carbocyclic Cyclopentanoid Nucleoside Precursors, I
	Abstract	A suitable protected D-ribono-1,4-lactone derivative has been used for the straightforward chiral pool synthesis of cyclopentanoid nucleoside precursors. Thus, epoxidation followed by deoxygenation or regioselective ring opening led to nucleoside precursors modified at the positions C(4), C(4a) and C(4,4a) as well as side-chain modified derivatives. The structures of the key intermediates were determined by X-ray analyses.
	Reference	Z. Naturforsch. 54b, 1068—1078 (1999); received May 21 1999
	Published	1999
	Keywords	Nucleosides, Carbohydrates, X-Ray Data
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	Identifier	ZNB-1999-54b-1068
	Volume	54

4	Author	Z. Naturforsch	Requires cookie*
	Title	Chiral Pool Synthesis of 4a-Substituted Carbocyclic Cyclopentanoid Nucleoside Precursors, II
	Abstract	Suitable protected 4,4a-anhydro-cyclopentane derivatives have been used for the straight forward of cyclopentanoid nucleoside precursors. Thus, by simple transformations nucleoside precursors modified at the positions C(4), C(4a) and C(4,4a) as well as side-chain modified derivatives were accessible. The structures of the key intermediates were determined by x-ray analyses.
	Reference	Z. Naturforsch. 54b, 1079—1091 (1999); received May 27 1999
	Published	1999
	Keywords	Nucleosides, Carbohydrates, X-Ray Data
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	Identifier	ZNB-1999-54b-1079
	Volume	54

5	Author	Carsten Handrosch, FrankW. Heinemann, Horst Kisch	Requires cookie*
	Title	Serendipitous Formation of the Cyclic Sulfite DIMTH(S0 3 ) by Reaction of DIMTH(OH)2 with SOCl2
	Abstract	The reaction of the acetonide protected derivative of tartaric acid, D IM TH(OH)2 (1) (1,6-di-desoxy-3,4-0-isopropylidene-2,5-di-C-methyl-threo-hexitol), with SO C h/N E tj does not lead to the expected dichlorinated species 2, but affords the cyclic sulfite DIM TH(SÜ 3) (3) ((1R , 7/?)-9,9-dimethyl-4-oxide-2,2,6,6-tetramethyl-4-thia-3,5,8,10-tetraoxabicyclo-[5,3,0] de cane) as indicated by X-ray structural analysis.
	Reference	Z. Naturforsch. 54b, 1015—1018 (1999); received April 16 1999
	Published	1999
	Keywords	Cyclic Sulfite, X-Ray Data, Tartaric Acid
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	Identifier	ZNB-1999-54b-1015
	Volume	54

6	Author	Norbert Kuhn, Elke Niquet, Manfred Steimann, Isabel Walker	Requires cookie*
	Title	Methoxyalky 1-funktionalisierte 2,3-Dihy droimidazol-2-ylidene [ 1 ] Methoxyalkyl Functionalized 2,3-Dihydroimidazol-2-ylidenes [1]
	Abstract	The 2,3-dihydro-l,3-di(methoxyalkyl)imidazol-2-ylidenes are obtained from the correspon ding cyclic thioureas and potassium. With CS2, the imidazolium dithiocarboxylates are formed. The results of X-ray structure determinations of two of these products are reported.
	Reference	Z. Naturforsch. 54b, 1181—1187 (1999); eingegangen am 8. Juni 1999
	Published	1999
	Keywords	Carbenes, Imidazoles, Dithiocarboxylates, X-Ray Data
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-1181.pdf
	Identifier	ZNB-1999-54b-1181
	Volume	54

7	Author	KaterynaE. Gubina3, VladimirA. Ovchynnikova, VladimirM. Amirkhanov3, Tatyana Yu, ViktorV. Sliva3, Tadeusz Skopenko3, Henryk Glowiakb, Kozlowskib	Requires cookie*
	Title	Carbacylamidophosphates: Structure and Properties of Bis(N,N,-morpholido)-[(N"-morpholido)-carboxamido] phosphate
	Abstract	The bis(N,N'-morpholido)-[(N"-morpholido)-carboxamido] phosphate: 0 (CH2 CH2)NC(0)-N(H)P(0)[N (CH 2 CH 2)0 ] 2 [HL], has been prepared and characterized by means of IR, 31P and 'H NM R spectroscopy and X-ray diffraction (triclinic, a = 9.282(2), b = 9.308(2), c = 21.341(4) Ä, a = 80.79(3)°, ß = 80.92(3)° 7 = 66.92(3)°, V = 1665.1(6) Ä 3, space group P i, Z = 4 and R = 0.0423, wR2 = 0.1303 for 6774 unique reflections used). The unit cell consists of two independent molecules connected by hydrogen bonds N-H...O=P into non-symmetric dimers. The compound behaves as a HL molecule with a protonation constant corresponding to the -C (0)N (H)P (0)-group of pK = 8.65 as determined by potentiometric studies.
	Reference	Z. Naturforsch. 54b, 1357—1359 (1999); received March 29 1999
	Published	1999
	Keywords	Carbacylamidophosphates, X-Ray Data, NMR Data
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-1357.pdf
	Identifier	ZNB-1999-54b-1357
	Volume	54

8	Author	BirteA. Hrens, PeterG. Jones, Sonderdruckanforderungen An, ProfP G Dr, Jo	Requires cookie*
	Title	P olysulfonylam ine, C X X II
	Abstract	[1] N ich t-kon ven tion elle W asserstoff brücken in B is[diphenylphosphino-(diphenylphosphinselenid)m ethan]-gold(I)-di(m ethansulfonyl)am id Polysulfonylamines, CXXII. Non-Conventional Hydrogen Bonds in Bis[diphenylphosphino(diphenylphos-phinselenide)methane]gold(I) Di(methanesulfonyl)amide In the crystal structure of (dppmSe)2Au+ N (S 0 2C H 3)2-(dppm = Ph2PCH2PPh2) chains are formed from non-conventional hydrogen bonds of the type C -H --0 . Within these chains two bi furcated hydrogen bond systems are present, each involving one methylene hydrogen (H ---0 2.51, 2.65 A) and one phenyl hydrogen (H — O 2.31, 2.35 A) as donors.
	Reference	Z. Naturforsch. 54b, 1474—1477 (1999); eingegangen am 16. Juli 1999
	Published	1999
	Keywords	Gold(I), Hydrogen Bonds, X-Ray Data
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	Identifier	ZNB-1999-54b-1474_n
	Volume	54

9	Author	EvgeniV. Avtomonov, KonstantinA. Rufanov	Requires cookie*
	Title	Zirconium Reagents for Organometallic Synthesis. Crystal Structures of ZrCl42Et20 and (Et2N)ZrCl3Et20
	Abstract	Reaction of 3 equivalents of ZrCU-2Et20 (1) with 1 equivalent of (Et^N ^Zr in diethyl ether readily affords crystalline (Et2N)ZrCl3-2Et20 (2) in almost quantitative yield. The product was characterised by elemental analysis and by 1H. 1 C NMR, and MS techniques. The reactivity of this reagent towards C-H acidic compounds has been studied using cyclopentadiene as a C-H acid. The crystal structures of both 1 and 2 have been determined by X-ray diffractometry. The coordination polyhedra reveal a nearly perfect octahedral geometry with a trans Et20 ligation for 1 and a cis one for 2.
	Reference	Z. Naturforsch. 54b, 1563—1567 (1999); received July 7 1999
	Published	1999
	Keywords	Zirconium, Adducts, Amides, Organometallic Reagents, X-Ray Data
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-1563.pdf
	Identifier	ZNB-1999-54b-1563
	Volume	54

10	Author	M. Atthias, W. Esterhausen, Tobias Bollw, Kurt Polborn	Requires cookie*
	Title	Synthese, Struktur und Reaktivität von Aminomethylpyridin- zinkdihalogeniden Synthesis, Structure and R eactivity o f A m inom ethylpyridine Zinc D ihalides
	Abstract	Zinc dichloride reacts with aminomethylpyridine (AMP) to the corresponding 1:1 adduct 1, whereas ZnBr2 forms an ionic 1:2 complex of the type [(AMP)2ZnBr]+ Br~ 2, which loses one neutral coligand upon heating in M e-C (0)0E t to yield nearly insoluble (AM P)ZnBr2 3. The condensation reaction of these compounds with acetone yields propylideneaminomethylpyri-dine zinc dichloride (4) and dibromide (5), respectively. The reaction of Z nl2 with AMP and acetone gives propylideneaminomethylpyridine zinc dichloride (6) in quantitative yield. The structures of 3, 4, and 6 confirm the linear relationship between the Zn-N distance and the X-Zn-X angle in compounds of the type (L2)ZnX2 with L2 being a bidentate amino base, whereas short Zn-N bonds enforce small X-Zn-X angles. Compound 2 consists of separated ions in the solid state with a five coordinate zinc atom in a distorted trigonal bipyramidal coordination sphere.
	Reference	(Z. Naturforsch. 55b, 51—59 [2000]; eingegangen am 9. November 1999)
	Published	2000
	Keywords	Halide, Pyridine Complexes, Zinc, X-Ray Data
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	TEI-XML for	default:Reihe_B/55/ZNB-2000-55b-0051.pdf
	Identifier	ZNB-2000-55b-0051
	Volume	55

11	Author	Peter Machnitzkia, Othmar Stelzer, Claudia Landgrafeb	Requires cookie*
	Title	Coordination Chemistry and Ligand Properties o f Chloromethylchlorophosphines R(C1)P-CH2-C1 -Molecular Structure o f m m s-C l2Pd[/Bu(Cl)P-CH2-Cl]2
	Reference	Z. Naturforsch. 52b, 1103—1113 (1997); eingegangen am 6. Mai 1997
	Published	1997
	Keywords	cis-, trans-Isomers, X-Ray Data
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	TEI-XML for	default:Reihe_B/52/ZNB-1997-52b-1103.pdf
	Identifier	ZNB-1997-52b-1103
	Volume	52

12	Author	SvetlanaN. Nikolaeva3, EvgeniV. Avtomonov, Jörg Lorberthb, ValeryS. Petrosyan3	Requires cookie*
	Title	The Reaction of Bis[bis(trimethylsilyl)amino]germylene with Bromocyanogen and the Crystal Structure of Bis[bis(trimethylsilyl)amino]bromocyanogermane
	Abstract	Bis[bis(trimethylsilyl)amino)]germylene (1) reacts with bromocyanogen to give bis[bis(trimethylsilyl)amino]bromocyanogermane (2). 2 crystallises from petroleum ether as a colourless solid which has been characterised by IR, H,I3C, 29Si NMR spectroscopy, ele mental analysis and X-ray diffractometry.
	Reference	(Z. Naturforsch. 53b, 9—12 [1998]; received October 7 1997)
	Published	1998
	Keywords	Germanium, Germylene, Germyl Cyanide, X-Ray Data
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	TEI-XML for	default:Reihe_B/53/ZNB-1998-53b-0009.pdf
	Identifier	ZNB-1998-53b-0009
	Volume	53

13	Author	Carola Stoll, Ingo-Peter Lorenz, Heinrich Nöth, Thomas Seifert	Requires cookie*
	Title	Oxochlorierung von Ubergangsmetall-Komplexen mit Thionylchlorid Oxochlorination of Transition Metal Complexes with Thionyl Chloride
	Abstract	The reaction of the transition metal complexes CpV(CO)4 and [CpM o(CO)3]2 with thionyl chloride affords the oxodichlorides C pM (0)C l2 (M = V, Mo) by oxidative decarbonylation. The X-ray structure analysis of C pV (0)C l2 shows the pseudo tetrahedral "piano-stool" configuration for the central vanadium atom. E in le itu n g
	Reference	Z. Naturforsch. 53b, 153—156 (1998); eingegangen am 25. November 1997
	Published	1998
	Keywords	Thionyl Chloride, Oxochlorination, Metaloxodichloride, X-Ray Data
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	TEI-XML for	default:Reihe_B/53/ZNB-1998-53b-0153.pdf
	Identifier	ZNB-1998-53b-0153
	Volume	53

14	Author	VladimirA. Ovchynnikov3, VladimirM. Amirkhanov3 ', TarasP. Timoshenko3, Tadeusz Glowiakb, Henryk Kozlowskib	Requires cookie*
	Title	Carbacylamidophosphates: Synthesis, Properties, and Structure of Dimorfolido-N-trichloroacetylphosphorylamide
	Abstract	Dimorpholido-N-trichloroacetylphosphorylamide: CCl3C(0)NHP(0)[N(CH2CH2)2 0 ] 2 [HL] and its sodium [NaL] and morpholine [HN(CH2CH2) 2 0 HL] salts were synthesized for the first time. The compounds were studied by IR spectroscopy and assignments of the characteristic IR bands have been made. The structure of [HL] was determined by X-ray diffraction. Crystals are monoclinic, a = 11.412(2) A, b = 16.056(3) A, c = 9.622(2) Ä, ß = 108.55(3)°, space group P2i/c; Z = 4. The refinement of the structure converged at R = 0.066. The molecules are connected into centrosymmetric dimers via hydrogen bonds formed by the phosphorylic oxygen atoms and hydrogen atoms of amide groups.
	Reference	Z. Naturforsch. 53b, 481—484 (1998); received November 11 1997
	Published	1998
	Keywords	Carbacylamidophosphates, IR Data, X-Ray Data
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	Identifier	ZNB-1998-53b-0481
	Volume	53

15	Author	PeterG. Jones, Birte Ahrens	Requires cookie*
	Title	Gold(I)-Komplexe mit Aminliganden, II [1]. (Methylpyridin)-Komplexe von Gold(I) Gold(I) Complexes with Amine Ligands, II. Methylpyridine Complexes of Gold(I)
	Abstract	Gold(I) complexes of overall formula LAuCl (L = various methylpyridines) are non-con ducting in acetone. X-ray structure analyses show that the solid state structure of the cor responding complex 1 (L = 2-picoline) is molecular; the 3-picoline derivative 2 is however ionic (L2A u)+(AuCl2)-. 3-Picoline forms a molecular complex LAuC6F5 (3) and also the ionic (L2Au)+(SbF6)_ (4). Complexes 1, 2 and 4 display short A u--A u contacts, leading to chains of gold atoms; additionally, complexes 3 and 4 show weak Au-F contacts. The (3-picoline)-gold(III) complex /rans-(L2AuCl2)+(SbF6)_ (5) was obtained as a by-product; it too contains short Au-F contacts.
	Reference	Z. Naturforsch. 53b, 653—662 (1998); eingegangen am 6. April 1998
	Published	1998
	Keywords	Gold(l), Pyridine, Amine Complexes, X-Ray Data
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	Identifier	ZNB-1998-53b-0653
	Volume	53

16	Author	V. Erena, M.T T Hiede, W. Olfgang, Jeitschko	Requires cookie*
	Title	Ternary Intermetallic Compounds L«Mn2Ali0 (Ln = Y, La-Nd, Sm, Gd-Dy) and L«Re2Al10 (Ln = Ce, Pr, Sm) with CaCr2Al10-Type Structure
	Abstract	The twelve title compounds have been prepared for the first time. Their CaCnA lio-type structure (PA/nm m, Z = 4) was refined from single-crystal X-ray data for the three representatives TbM mAlio (a = 1274.3(2) pm, c = 511.4(2) pm, R = 0.025 for 680 structure factors F and 43 variable parameters VO, CeRe2Alio (a -1295.5(5) pm, c -517.2(4) pm, R = 0.054 for 810 F a n d 46 V), and SmReaAlio (a = 1291.5(2) pm, c = 516.5(1) pm, R = 0.021 for 622 F and 46 V). The atomic positions of the lanthanoid and transition metal atoms are fully occupied. Significant deviations from the full occupancies were observed for two aluminum sites in TbM mAlio and for all five aluminum sites of the two rhenium-containing compounds, resulting in the compositions TbMn2Al9.63(2), CeRe2Al9.52(8), and SmRe2Al9.i6< 9)-The cell volume of CeRe2Alio and to a smaller extent also that of CeMm A1 io indicate mixed or intermediate +III/+IV valencies of the cerium atoms in these compounds. The structural relationships between the three closely related body-centered tetragonal structures of ThM ni2, CeMn-iAlx, DyFeöAU, and the primitive tetragonal structure of CaCnA lio are briefly discussed.
	Reference	Z. Naturforsch. 53b, 673—678 (1998); received February 2 1998
	Published	1998
	Keywords	Intermetallic Compounds, Crystal Structure, X-Ray Data
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	Identifier	ZNB-1998-53b-0673
	Volume	53

17	Author	VladimirA. Ovchynnikov3, VladimirM. Amirkhanov3, AnatoliyA. Kapshuka, Tatyana Yu, Tadeusz Sliva2, Henryk Glowiakb, Kozlowskib	Requires cookie*
	Title	Synthesis, IR and X-Ray Studies of Tetra(N,N'-tetraethyl-N"-benzoyl- phosphorictriamide)-tetra(/x-3-methoxo)-tetra(methanol)tetra-NickeI(II)
	Abstract	A new nickel(II) complex with N,N'-tetraethyl-N"-benzoylphosphortriamide (HL = C6H5C(0)N(H)P(0)(NEt2)2) of composition Ni4L4(OCH3)4-(HOCH;04 (1) has been synthe sized. The crystal and molecular structure of 1 has been determined from the X-Ray diffraction data (tetragonal, space group P42)C with a = 17.000(2) A, c = 15.338(3) A, Z = 2; R = 0.0399 for 1412 unique reflections). The structure is made up of cubane-like tetramers. In the corners of a cube there are 4 atoms of nickel and 4 atoms of oxygen of methoxy groups. The nickel atoms are characterized by a slightly distorted octahedral environment, which consists of three oxygen atoms of methoxy groups, carbonylic and phosphorylic oxygen atoms of the ligand L~, and an oxygen atom of a methanol molecule. The ligands L~ coordinate to the metal ion forming a chelate via the oxygen atoms of carbonylic and phosphorylic groups.
	Reference	Z. Naturforsch. 53b, 836—840 (1998); received February 23 1998
	Published	1998
	Keywords	Nickel (II), Carbacylamidophosphates, X-Ray Data
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	Identifier	ZNB-1998-53b-0836
	Volume	53

18	Author	Norbert Kuhn, Martin Grathwohl3, Manfred Steimann3, Gerald Henkelb, Herrn	Requires cookie*
	Title	.2-Bis( 1' ,31 -dimethy limidazolin-21 -iminato)ethan - ein neuer Chelatligand [1]
	Abstract	The reaction of 2-imino-l,3-dimethylimidazoline (10, ImNH) with X-CH2CH2-X (11, X = p-CH3C6 H4 S 0 3) gives the diimine adduct ImN-CH2CH2-NIm • 2 HX (12) from which the diimine ImN-CH2CH2-NIm (13) is obtained on treatment with KH. 13 reacts with (C6H5CN)2PdCl2 (15) to give the chelate complex (ImN-CH2CH2-NIm)PdCl2 (16). The X-ray structures of 12 and 16 are reported.
	Reference	Z. Naturforsch. 53b, 997—1003 (1998); eingegangen am 2. Juni 1998
	Published	1998
	Keywords	Imines, Palladium, Chelates, Ligand Effects, X-Ray Data
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	Identifier	ZNB-1998-53b-0997
	Volume	53

19	Author	N. Orbert, K. Uhn, M. Anfred, Steim Ann, Gerd Weyers, Herrn	Requires cookie*
	Title	Synthese und Eigenschaften von l,3-Diisopropyl-4,5-dimethylimidazolium- 2-car boxy lat. Ein stabiles Carben-Addukt des Kohlendioxids [1]
	Abstract	The reaction of 2,3-dihydro-l,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (5) with C 0 2 gives the imidazolium-2-carboxylate 6 . The compound can be transformed into the salts of its corresponding Broenstedt acid 8 . The cationic acid chloride 10a is obtained from 6 and thionyl chloride. Chemical properties and spectroscopic data indicate 6 to be less basic than its anionic counterparts, e. g. PhC02 . The X-ray structure of
	Reference	Z. Naturforsch. 54b, 427—433 (1999); eingegangen am 27. November 1998
	Published	1999
	Keywords	Carbenes, Imidazoles, Carboxylic Acids, X-Ray Data
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	Identifier	ZNB-1999-54b-0427
	Volume	54

20	Author	Norbert Kuhn, Manfred Steimann3, Gerd Weyers3, Gerald Henkelh, Herrn	Requires cookie*
	Title	l,3-DHSopropyl-4,5-dimethylimidazolium-2-N,N'-diisopropylamidinat, ein neuartiges Retain [1] 1,3-Diisopropyl-4,5-dimethylimidazolium-2-N,N'-diisopropylamidinate, a Novel Betaine [1]
	Abstract	The imidazolium-2-amidinate 6 is obtained from the reaction of 2,3-dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (4) with diisopropylcarbodiimide (5) as stable solid. Overcrow ding causes a lowered symmetry of the amidinate fragment indicated both by structural and NMR data. The strongly basic properties of 6 allow facile protonation with HC1 to the cationic amidine derivatives 7 and 8 . The ketoamidine 10 is formed by a ring opening reaction of 6 with water. I he X-ray structures of 6 and 10 are reported
	Reference	Z. Naturforsch. 54b, 434—440 (1999); eingegangen am 21. Dezember 1998
	Published	1999
	Keywords	Amidines, Carbenes, Carbon Diimides, Imidazoles, X-Ray Data
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	TEI-XML for	default:Reihe_B/54/ZNB-1999-54b-0434.pdf
	Identifier	ZNB-1999-54b-0434
	Volume	54

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