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21	Author	M. Herrmann, H. Parlar, F. Körte	Requires cookie*
	Title	Ein Beitrag zur photoinduzierten Desaminierung substituierter 1.2.4-Triazinone A Contribution to the Photoinduced Desamination of 1,2,4-Triazinones
	Abstract	Photochemical Reactivity, Desamination, l,2,4-Triazin-5(4H)-ones Solution-phase photoreactions of 4-amino-substituted l,2,4-triazin-5(4H)-ones (la-J) in different solvents using UV light with wave-lengths greater than 290 nm have been in-vestigated. The results show, that the desamina-tion reaction is influenced by both oxygen and water. The photoexperiments showed clearly that OOH-radicals take part in the first step of reaction.
	Reference	(Z. Naturforsch. 37b, 117—118 [1982]; eingegangen am 6. August 1981)
	Published	1982
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	Identifier	ZNB-1982-37b-0117_n
	Volume	37

22	Author	Ursula Frank-Cordier, Gerhard Cordier, Herbert Schäfer	Requires cookie*
	Title	Die Struktur des Na7Ga13-I und ein Konzept zur bindungsmäßigen Deutung The Structure of NavGai3-I and its Characterization by a Bonding Scheme
	Abstract	The new compound NayGa^-I crystallizes in the trigonal-rhombohedral system, space group R 3 m, with the constants a = 1496.5(3) pm, c = 3893(1) pm, c/o = 2.60. The Ga atoms form Gai2 icosahedra and Gais clusters, connected to a threedimensional net. The arrangement of these clusters is related to the MgCu2 structure. The Na content of this compound correlates with the number of electrons necessary for a stable electron configuration in the Ga partial structure. The BaAl4 type structure of NaGa4 has been confirmed by single crystal data.
	Reference	(Z. Naturforsch. 37b, 119—126 [1982]; eingegangen am 5. Oktober 1981)
	Published	1982
	Keywords	Natrium Gallides, Crystal Structure, Bonding Scheme
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	Identifier	ZNB-1982-37b-0119
	Volume	37

23	Author	Ursula Frank-Cordier, Gerhard Cordier, Herbert Schäfer	Requires cookie*
	Title	Neue Ga-Cluster-Verbände im Na7Ga13-II New Ga-Cluster Compounds: The Structure of Na7Gai3-II
	Abstract	Na7Gai3-II crystallizes in the orthorhombic system, space group Pnma with the con-stants a -1562.5(3) pm, b = 1497.9(3) pm, c = 2167.8(4) pm. The Ga-atoms form Gaj.2 icosahedra and Gais clusters connected to a threedimensional network. The centres of these clusters correspond to the atomic positions of the MgCu2 structure. The number of bonding electrons is related to the Na content of the compound.
	Reference	(Z. Naturforsch. 37b, 127—135 [1982]; eingegangen am 5. Oktober 1981)
	Published	1982
	Keywords	Natrium Gallides, Crystal Structure, Bonding Scheme
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	Identifier	ZNB-1982-37b-0127
	Volume	37

24	Author	Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. Sheldrick	Requires cookie*
	Title	Darstellung und Kristallstruktur von Arsen(III)phosplior(V)oxid, AsP04 Preparation and Crystal Structure of Arsenic(III) Phosphorus(V) Oxide, AsP04
	Abstract	The compound ASPO4 was prepared from AS2O3 and P2O5 in a sealed tube at 673 K. The crystal structure, isostructural with As02, was refined to R = 0.021 [Pnma, a — 843.15(10), b = 502.29(10), c = 720.39(12) pm, Z = 4]. The structure consists of infinite layers. The arsenic(III) atoms are coordinated by three oxygen atoms at right angles; phosphorus(V) by four oxygens in the form of a distorted tetrahedron.
	Reference	Z. Naturforsch. 37b, 136—137 (1982); eingegangen am 7. Oktober 1981
	Published	1982
	Keywords	Sealed-tube Synthesis, Crystal Structure, Arsenic(III), Phosphorus(V)
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	Identifier	ZNB-1982-37b-0136
	Volume	37

25	Author	Doris Bodenstein, Axel Brehm, PeterG. Jones, Einhard Schwarzmann, GeorgeM. Sheldrick	Requires 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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	Identifier	ZNB-1982-37b-0138
	Volume	37

26	Author	PeterG. Jones, Corneha Lensch, GeorgeM. Sheldrick	Requires cookie*
	Title	Kristallstruktur der sulfidverbrückten Gold(I)verbindung [Au{S(AuPPh3)2}2] + [(CH3)3SnCl2] — Crystal Structure of the Sulphide-bridged Gold(I) Complex [Au{ S(AuPPh3)2}2] + [(CH3)3SnCl2]
	Abstract	Crystal Structure, Gold(I), Bridging Sulphide Ligand, Five-coordinate Tin(IV) The compound [Au{S(AuPPh3)2}2] + [(CH3)3SnCl2]-was prepared by the reaction of Ph3PAuCl with ((CH3)3Sn)2S and characterised by an X-ray structure determination [C2/c, a = 1713.4(5), b = 2996.7(12), c = 3081.7(12) pm, ß = 102.40(3)°, Z = 8, R = 0.074]. The cation displays short Au • • • Au contacts and narrow Au-S-Au angles (< 90°). The chlorine atoms of the anion are axially arranged. There are two independent anions, one lying on, and the other disordered about, the crystallographic twofold axes.
	Reference	Z. Naturforsch. 37b, 141—143 (1982); eingegangen am 8. Oktober 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0141
	Volume	37

27	Author	FrankH. Köhler, KarlH. Doll	Requires cookie*
	Title	NMR-Spektroskopie an paramagnetischen Komplexen, XXVII [1] Paramagnetische
	Abstract	Octamethylmetallocenes, Paramagnetic 1 H/ 13 C NMR The tetramethylated cyclopentadienyl anion has been prepared from tiglinic acid and reacted with solvated metal(II) chlorides to give new octamethylmetallocenes (Me-jcp^M. For M = V, Cr, Co and Ni the paramagnetic 1 H and 13 C spectra have been recorded. The NMR data prove the molecular structure and show that all methyl groups rotate almost freely. The methyl proton resonance of the nickelocene may serve as a probe for the adjustment of metallocene properties by ring substitution. Based on qualitative MO arguments the correlation of electron spin densities and paramagnetic shifts lead to an understanding of the signal splitting of cobaltocenes. From the electronic point of view the octamethylmetallocenes may be regarded as being in vers to l,l'-dimethylmetallocenes.
	Reference	Z. Naturforsch. 37b, 144—150 (1982); eingegangen am 19. Oktober 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0144
	Volume	37

28	Author	Rüdiger Kniep, HorstDieter Reski	Requires cookie*
	Title	Phasenbeziehungen im System As2Te3—Asl3 und die Kristallstruktur von As5Te7I Phase Relations in the System As2Te3-Asl3 and the Crystal Structure of AssTe7l
	Abstract	The system As2Te3-Asl3 is quasibinary and includes the intermediate phases AssTe7l and a-AsTel with incongruent melting behaviour. The crystal structure of AssTe7l contains ribbons of condensed octahedral chains sharing common edges. Arsenic atoms are situated in the centres of the octahedra and -in a trigonal-pyramidal arrangement -at the borders of the ribbons. There are close relationships between the crystal structures of As2Te3 and AssTe7l as well as As5Te7I and a-AsTel. The particular expansion of the AsöTe7l one-phase region within the quasibinary system is discussed with respect to these structural relations.
	Reference	Z. Naturforsch. 37b, 151—156 (1982); eingegangen am 24. August 1981
	Published	1982
	Keywords	Telluroiodides of Arsenic, Phase Relations, Crystal Structure
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	Identifier	ZNB-1982-37b-0151
	Volume	37

29	Author	Franz Oberdorfer, Barbara Baibach, ManfredL. Ziegler	Requires cookie*
	Title	Photonitrosylierung
	Abstract	von Re2(CO)10 in Gegenwart von Olefinen; Röntgenstrukturanalysen von Re3(C0)14N02 und Re3(CO)14COOH Photonitrosylation of Re2(CO)io in the Presence of Olefines; X-ray Structure Determination of Re3(C0)i4N02 and Re3(CO)i4COOH Photonitrosylation, ^-Complexes of Rhenium Carbonyl The photochemically induced reactions of Re2(CO)io were carried out in tetrahydrofuran solution in the presence of NO, cyclooctatetraene and 1,3-butadiene. Re3(C0)i4N02 and Re3(C0)i50H could be isolated from the reaction with NO. UV irradiation of mixtures of the carbonyl with cyclooctatetraene or 1,3-butadiene yielded the 2,5-dihydrofuran-Re2(CO)8 complex. Cyclooctatetraene is cleaved in this reaction, generating two 1,3-butadiene fragments. The known dimeric Re(CO)4-jU-(?? 2 :77 2 C4H6)Re(CO)4 was obtained by trapping the butadiene molecules through coordination. The compounds Re3(C0)i4N02 and Re3(CO)iöOH have been characterized by X-ray structure analysis.
	Reference	Z. Naturforsch. 37b, 157—167 (1982); eingegangen am 18. September 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0157
	Volume	37

30	Author	Lanthan, Holmium, Erbium, ThuliumUnd Lutetium, Herbert Schumann, Georg-Michael Frisch	Requires cookie*
	Title	Metallorganische Verbindungen der Lanthanoiden, XTTT [1] Tris(di-f-butylarsin)-Derivate von Yttrium
	Abstract	Lithium (di -butyl) arsenide reacts with the trichlorides of yttrium, lanthanum, praseodymium, holmium, erbium, thulium, and lutetium under elimination of lithium chloride and formation of the corresponding tris(di-f-butylarsine) derivatives.
	Reference	Z. Naturforsch. 37b, 168—171 (1982); eingegangen am 5. Juni 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0168
	Volume	37

31	Author	Karl Schlosser	Requires cookie*
	Title	Photochemisches Verhalten von Bis(trifluormethylthiyl)trithiocarbonat in Lösung Photochemical Behaviour of Bis(trifluoromethylthiyl)trithiocarbonate in Solution
	Abstract	Bis(trifluoromethylthiyl)trithiocarbonate, Electronic Spectra, Photochemical Behaviour, Tris(trifluoromethylthiyl)methyl Radical Bis(trifluoromethylthiyl)trithiocarbonate shows electronic transitions at 496 nm (nn), 299 nm {nn) and 259 (ntr). Photolysis with 254 and 300 nm light at 200 and 309 K in pentane, and at 371 K in heptane yields a mixture of CS2 and perfluorinated compounds such as F3CSCF3, F3CSSCF3, (F3CS)3C-C(SCF3)3, (F3CS)2C=C(SCF3)2, (F3CS)3CH and F3CS-substituted solvent. The concentration of these newly formed products versus time of irradiation has been monitored. The primary photochemical process is the intra-molecular decomposition into CS2 and F3CS -and F3O radicals which dimerize in a solvent cage. The formation of (F3CS)3C-C(SCF3)3 is interpreted in terms of a competition between this combination process and trapping of trifluoromethyl radicals by (FsCS^CS, forming (F3CS)3C-, which subsequently dimerizes. On irradiation at 496 nm (n n) no photo-chemical process has been observed.
	Reference	Z. Naturforsch. 37b, 172—178 (1982); eingegangen am 8. September 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0172
	Volume	37

32	Author	JaapN. Louwen, Jaap Hart, DerkJ. Stufkens, Ad Oskam	Requires 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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	Identifier	ZNB-1982-37b-0179
	Volume	37

33	Author	HansH. Karsch, Ulrich Schubert	Requires cookie*
	Title	Komplexe mit alkylsubstituierten Phosphinomethanen und -methaniden, III [1] Strukturchemie dreigliedriger Brückenliganden, III [2] Bis(dimethylphosphino)metlian als Brückenligand in einem dimeren Ag(I)-Komplex Complexes with Alkyl Substituted Phosphinomethanes and -methanides, III [1] Structural Chemistry of Three-membered Bridging Ligands, III [2] Bis(dimethylphosphino)methane as a Bridging Ligand in a Dimeric Ag(I) Complex
	Abstract	Eight Membered Heterocycle, Bis(dimethylphosphino)methan-Ag Complex, X-ray [(Me2PCH2PMe2)]2Ag2](PFe)2 has been prepared and characterized by an X-ray struc-ture analysis. It crystallizes in the space group Pbca with a — 1117(1), b = 1768(5) and c = 1315(2). The dication forms an eight membered centrosymmetric ring, the Ag and P atoms being nearly coplanar. Ag-Ag* 304.1(2) pm. The structure is compared with that of the free ligand [15] and of an analogous Ph2PCH2PPh2 complex of Au(I) [9].
	Reference	Z. Naturforsch. 37b, 186—189 (1982); eingegangen am 13. Oktober 1981
	Published	1982
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	TEI-XML for	default:Reihe_B/37/ZNB-1982-37b-0186.pdf
	Identifier	ZNB-1982-37b-0186
	Volume	37

34	Author	Udo Engelhardt, Ingeborg Kirner	Requires cookie*
	Title	TricUonnethylphosphonsäuredihydrazid
	Abstract	und 3.6-Bi8(trichlormethyl)-3.6-dioxo-1.2.4.5-tetraaza-3.6-diphosphacyclohexan Trichloromethylphosphonic Acid Dihydrazide and 3,6-Bis(trichloromethyl)-3,6-dioxo-l,2,4,5-tetraaza-3,6-diphosphacyclohexane Inorganic Phosphorus Hydrazine Heterocycle The title compounds are prepared from trichloromethylphosphonic acid dichloride and excess hydrazine hydrate, and from the dihydrazide and the dichloride in the presence of triethylamine, resp. They are characterized by elemental analysis, mass spectra, 1 H and 31 P NMR spectra, IR and Raman data. Thin layer chromatographic experiments show that in the raw material of the ring compound two isomers (probably eis-and trans-) are present, whereas in the recrystallized product only one isomer can be detected. Attempts of a preparative separation of isomers were unsuccessfull so far due to very low concentra-tions of the product with the slightly higher Rf. Single crystals of the isolated ring com-pound decompose on irradiation with X-rays. Einführung
	Reference	Z. Naturforsch. 37b, 190—194 (1982); eingegangen am 9. Oktober 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0190
	Volume	37

35	Author	Dietmar Schomburg	Requires cookie*
	Title	Strukturchemie von Verbindungen des pentakoordinierten Siliciums. Das Bis(ethylendioxy)methylsilan-Anion Structural Studies of Pentacoordinate Silicon. The Bis(ethylenedioxy)methylsilane Anion
	Abstract	Molecular Structure, Spirocyclic Pentacoordinate Silicon Hexamethylendiammonium-bis(ethylenedioxy)methylsilane crystallizes in the hexago-nal space group P6i22, Z = 6 with a= 11.902(1), c = 30.148(4) A. The structure was refined to R — 0.041 using 2281 independent reflections. The geometry around the penta-coordinate silicon atom is between a trigonal bipyramid and a square pyramid. Oeq-Si-Oeq 136.0(1)°, Oax-Si-Oax 161.7(1)°. The Si-Oax bond lengths are 1.749(2) and 1.769(2) A, the Si-Oeq 1.711(2) and 1.735(2) A, Si-Ceq 1.876(3) A. The compound forms strong N-H • • • O hydrogen bonds between cation and anion. The cation lies on a crystallographic twofold axis.
	Reference	Z. Naturforsch. 37b, 195—197 (1982); eingegangen am 18. September 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0195
	Volume	37

36	Author	Ulrich Müller, Hans-Dieter Dörner	Requires cookie*
	Title	Eine neue Synthese, das Schwingungsspektrum und die Kristallstruktur von Tetraphenylarsonium-hydrogendichlorid As(C6H5)4 [C12H] A New Synthesis, the Vibrational Spectrum and the Crystal Structure of Tetraphenylarsonium Hydrogendichloride AsfCeHsMC^H]
	Abstract	As(C6H 5)4 + [Cl2H]-crystallizes in the monoclinic space group B2/b with four formula units per unit cell, the lattice constants being a— 1704, 6= 1751, c — 705 pm and y = 92.73°. The crystal structure was determined and refined from X-ray diffraction data to a residual index of R = 0.043. The CI2H-ion is situated on an inversion center with a C1---C1 distance of 309 pm. The IR and Raman spectra confirm the presence of sym-metrical CI2H -ions; the observed splitting of IR bands can be explained by factor group analysis. A simple procedure for the preparation consists of the reaction of HCl with As(C6H 5)4Cl.
	Reference	Z. Naturforsch. 37b, 198—200 (1982); eingegangen am 1. Oktober 1981
	Published	1982
	Keywords	Tetraphenylarsonium Hydrogendichloride, Synthesis, Crystal Structure, Raman Spectra, IR Spectra
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	Identifier	ZNB-1982-37b-0198
	Volume	37

37	Author	Hartmut Menzel, WolfPeter Fehlhammer, Wolfgang Beck	Requires cookie*
	Title	Anchoring of Metal Carbonyls on Poly Isocyanides [1]
	Abstract	Polyisocyanides with the groups -CH2N = C and -C(0)0(CH2)2N = C attached to poly-styrene have been prepared and reacted with various metal carbonyl compounds resulting in the fixation on the polymeric supports of -M(CO)s, -M(CO)4 (M = Cr, Mo, W), -MO(C1)(J?-C5H5)(C0)2, -Mn2(CO)", -Mn(CO)"X (N = 3, 4; X = Cl, Br), -Fe(CO)4, -Fe3(CO)u, -FeI2(CO)2, -FeX(^-C5H5)(CO) (X = Cl, Br, I), -Ru(CO)4, -Ru3(CO)9, ,,-Os3H2(CO)io", and -RhCl(CO)2. The cyano complexes [Fe(CN)2(f?-C5H5)CO]-and [Mo(CN)2(f?-C5H5)(CO)2]-have been immobilized by alkylation with chloromethylated polystyrene.
	Reference	Z. Naturforsch. 37b, 201—208 (1982); eingegangen am 1. Oktober 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0201
	Volume	37

38	Author	Werner Kruppa, Dieter Bläser, Roland Boese, Günter Schmid	Requires cookie*
	Title	Heteronucleare Clustersysteme, XX [1] ^3-Bi8mutio-cyclo-tris(tricarbonyliridium) (3 Ir-Ir), BiIr3(CO)9 Darstellung und Strukturuntersuehung eines neuartigen Iridiumclusters Heteronuclear Cluster Systems, XX [1] iM3-Bismutio-cyclo-tris(tricarbonyliridium)(3Ir-Ir), BiIr3(C0)g - Synthesis and Structural Investigation of a Novel Iridium Cluster
	Abstract	The synthesis of BiIr3(CO)9 is described. IR and mass spectroscopic data are discussed. The structure of BiIr3(CO)9 was solved by X-ray analysis. The structural data are discussed and compared with those of the related compounds Ir4(CO)i2 and Bi[Co(CO)4]3, respec-tively.
	Reference	Z. Naturforsch. 37b, 209—213 (1982); eingegangen am 29. September 1981
	Published	1982
	Keywords	Iridium Cluster, Bismuth Cluster, Synthesis, X-ray
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	Identifier	ZNB-1982-37b-0209
	Volume	37

39	Author	K. Schwochau, L. Astheimer, H.-J Schenk, E. G. Witte	Requires cookie*
	Title	On the Extraction of Uranium from Sea Water by a Complexing Resin Uranium Recovery from Sea Water, Sorbents Accumulating Uranium, Uranium Uptake and Elution
	Abstract	A cross-linked polyacryl resin containing amidoxime or related functional groups is capable of concentrating uranium from natural sea water. The resin presents a uranium loading of more than 3000 ppm; moreover it has a higher selectivity, uptake rate, and attrition stability than hydrous titanium oxide.
	Reference	Z. Naturforsch. 37b, 214—216 (1982); received October 21 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0214
	Volume	37

40	Author	Tony Debaerdemaeker, Willy Friedrichsen	Requires cookie*
	Title	Mesoionische Sechsringheterocyclen, IV [1]; Struktur des 2-Ferrocenyl-3.5-diphenyl-6-oxo-6H-1.3-oxazin-3-ium-4-olats Mesoionic Six-Membered Heterocycles, IV [1] Structure of 2-Ferrocenyl-3,5-chphenyl-6-oxo-6H-l,3-oxazine-3-ium-4-olat
	Abstract	Mesoionic 4,6-dioxo-l,3-oxazine, X-ray The structure of the title compound has been determined by X-ray crystallography. Ferrocenyl-Carbokationen [2] des Typs 1 (Fe = Ferrocenyl) sind -aus offensichtlich im einzelnen noch ungeklärten Gründen [2, 3] -sehr stabil [4]. Es liegt nun nahe, die Stabilität und Reaktivität solcher Verbindungen zu untersuchen, in denen der Ferrocenylrest an einem formal positiv geladenen C-Atom eines neutralen Restes gebunden ist; dies ist bei mesoionischen Fünf-und Sechsringhetero-cyclen (Beispiele: 2, 3) der Fall. Während mittler-weile eine große Zahl mesoionischer Verbindungen bekannt geworden ist [5-7], wurde bislang nur ein metallocenylsubstituierter Vertreter dieser Sub-stanzklasse, die Verbindung 4, beschrieben [8, 9]. Über die Struktur von 4 wird in dieser Arbeit be-richtet. Fe—^ 1 Fe R 1 0 A. Strukturermittlung
	Reference	Z. Naturforsch. 37b, 217—221 (1982); eingegangen am 10. Juli 1981
	Published	1982
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	Identifier	ZNB-1982-37b-0217
	Volume	37

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