| | 4 | Author
| K. Brodersen, H. G., J. Schrenk | Requires cookie* | | | Title
| Impedanzmessungen an Tetraiodomercuraten Im pedance S pectroscopy o f T etraiodom ercurates  | | | | Abstract
| In stitu t für A norganisch e C hem ie I, In stitu t für Physikalische C hem ie I, E gerlandstraße 1, D-8520 E rlangen Z. N atu rfo rsch . 47b, 17 -2 1 (1992); eingegangen am 22. M ai 1991 T etraio d o m ercu rate, Im pedance Spectra As therm ochrom ic co m p o u n d s, tetraio d o m ercu rates show phase tran sitio n s, w hich have been investigated by im pedance spectroscopy. In the case o f A g2H g I4 and C u 2H g I4 we found clear changes o f conductivity n o t present w ith H gF . In all cases the m ain resistance is caused by the grain b o u n d aries betw een the single crystals o f the pow der sam ple. Also diffusion in the double layer in fro n t o f the surface o f the electrodes influences the spectra. Single crystal m eas urem ents o f H g l, show the different ionic m obilities along the various cry stallographic direc tions. | | | |
Reference
| (Z. Naturforsch. 47b, 17 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0017.pdf | | | | Identifier
| ZNB-1992-47b-0017 | | | | Volume
| 47 | |
| 6 | Author
| | Requires cookie* | | | Title
| Lithiumverbindungen von Adamantyl-, Silyl-und Arylaminofluorsilanen | | | | Abstract
| L ithium C om pounds o f A dam antyl-, Silyl-and A rylam inofluorosilanes U. Klingebiel, D. Stalke* und S. V ollbrecht In stitu t für A norganische Chemie der U niv ersität G ö ttin g en , T am m annstraße 4. D-3400 G öttingen Z. N aturforsch. 47b, 2 7 -3 0 (1992); eingegangen am 5. N o v em b er 1990/16. A ugust 1991 A m inofluorosilanes, L ithium C om pounds, C rystal S tru ctu re D im eric lith iu m -ad am an ty lim in o -d w m -b u ty lflu o ro silan e, [(M e3C)2 SiF Li N A d]2, adds one m olecule o f T H F per dim er when crystallized from T H F . A bicyclic co m p o u n d is obtain ed w ith four-[FiL i(T H F)N ] and tw o-co o rd in ated [N LiN ] lithium . L ith iated d\-tert-b\iiy\-[{tert-butyldipheny!silyl)]am inofluorosilane an d d i-ter? -butyl-4-fluoroanilinofluorosilane b o th add tw o m olecules o f T H F w ith form ation o f (S iF L i(T H F)2N)-fou r-m em b ered rings w hen cry stal lized from T H F . T H F can be replaced by T M E D A w ith reten tio n o f the (S iF L iN)-four-m em -bered ring. The crystal structure o f (M e3C)-,S iF L i(T M E D A)N C 6H 4F is rep o rted . | | | |
Reference
| (Z. Naturforsch. 47b, 27 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0027.pdf | | | | Identifier
| ZNB-1992-47b-0027 | | | | Volume
| 47 | |
| 9 | Author
| | Requires cookie* | | | Title
| P ^P J >s-s-CHr Ph | | | | Abstract
| ph3p ö O Ö 40 W. W eigand et al. ■ M etallkom plexe m it fu nktionalisierten Schwefelliganden D ie intensive Bande bei ca. 1030 cm 1 in den IR -S pektren von 4 und 5 kann der v(S = 0)-Schw ingung zugeordnet w erden; sie ist ein sicheres Indiz für die T h io su lfin ato -F u n k tio n [2, 4a], Bei etw as höheren W ellenzahlen beobachtet m an diese A b so rp tio n en in Thiosulfinsäure-S-estern (1 0 7 5 -1100 cm " 1) [6]. Die 'H -und 13C -N M R -S p ek tren dieser K om plexe entsprechen den E rw artungen. Die D iastereoselektivität der R eaktion von 2 m it 3 w urde 'H -N M R -sp ek tro sk o p isch zu 10:3 erm it telt. Die T op izität (like/unlike) der beiden Isom ere w urde nicht bestim m t. D er Einfluß des stereo-genen Z entrum s am sulfoxidischen Schw efelatom a u f die benzylischen P rotonen in 4 und 5 und die beiden P h o sp h o rato m e in 4 führt zu einer N ich t äquivalenz und dam it zum A uftreten eines AB-Spinsystem s in den 'H -und 3,P -N M R -S pektren. Eine K ristallstruktur-A nalyse von 4 (A bb. 1, T ab. I, II a, b, c und III) bestätigt das Vorliegen der T h io su lfinato-S truktureinheit. Drei kristallo-graphisch unabhängige M oleküle A, B, C von 4 liegen zusam m en m it zwei M olekülen Benzol in der asym m etrischen Einheit der triklinen E inheits zelle (R au m g ru p p e P i) des untersuchten K ristalls vor. Die R uthenium -A tom e sind tetraedrisch von zwei P hosphor-und einem Schw efelatom sowie einer C yclopentadienyl-E inheit um geben. D ie S -S -B in d u n g sa b stä n d e in 4 betragen für M olekül A 204,4(4), für M olekül B 205,5(4) und für M olekül C 205,3(5) pm und sind etw as länger | | | |
Reference
| (Z. Naturforsch. 47b, 39 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0039.pdf | | | | Identifier
| ZNB-1992-47b-0039 | | | | Volume
| 47 | |
| 10 | Author
| | Requires cookie* | | | Title
| Neue Sesquisulfide der Lanthanoide im U 2S3-Typ: Tb2S3 und D y2S 3 | | | | Abstract
| Thom as Schleid In stitu t für A norgan isch e Chem ie der U niversität, C allinstraße 9, W -3000 H an n o v er 1 Z. N atu rfo rsch . 47b, 4 5 -5 0 (1992); eingegangen am 1 2 . Juli 1991 L an th an id e Sesquisulfides, C rystal S tructure New sesquisulfides o f the lanthanides w ith the U 2S 3-type stru ctu re (M 2 S3, M = T b a n d Dy) were p repared th ro u g h the o x idation o f T b C lH 0 67 and D yC l2, respectively, w ith a p p ro p riate a m o u n ts o f sulfur in the presence o f N aC l fluxes in silica pro tected sealed tan talu m co n tain ers at 850 C for at least seven days. The p rep aratio n from the elem ents (2M + 3S; M = T b and Dy) u nder otherw ise analo g o u s reaction conditions and tem p eratu res was also successful w hen equim oiar fluxes o f N aCl were applied. The crystal stru ctu re was d eterm ined from single crystal d a ta for Tb-,S3 an d Dy2S3, b oth crystallizing with the U-,S3-type stru ctu re (o rth o rh o m -bic, P nm a, Z = 4; T b 2 S3: a = 1067.87(8), b = 388.06(4), c = 1049.07(7) pm ; D y2S3: a = 1062.45(7), b = 386.59(4), c = 1044.36(8) pm) when p rep ared u n d er the ab ove-m entioned conditions. | | | |
Reference
| (Z. Naturforsch. 47b, 45 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0045.pdf | | | | Identifier
| ZNB-1992-47b-0045 | | | | Volume
| 47 | |
| 12 | Author
| | Requires cookie* | | | Title
| Übergangsmetallkomplexe mit Schwefelliganden, LXXX | | | | Abstract
| Synthese, Struktur, Oxotransfer-und redoxgekoppelte Kondensationsreaktionen von Molybdän-Oxo-Komplexen mit dem sterisch anspruchsvollen vierzähnigen Thioether-Thiolat-Liganden buS4'2-('buS4'2~ = l,2-Bis(2-mercapto-3,5-di-f-butylphenylthio)ethan(2-)) Transition Metal Complexes with Sulfur Ligands, LXXX* | | | |
Reference
| (Z. Naturforsch. 47b, 61 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0061.pdf | | | | Identifier
| ZNB-1992-47b-0061 | | | | Volume
| 47 | |
| 18 | Author
| Yuzo Nishida, IzumiW. Atanabe, KeiU. Noura | Requires cookie* | | | Title
| Interaction between Binuclear Copper(I) Complexes and the Dioxygen Molecule Investigated by Electrochemical Methods | | | | Abstract
| D ep artm en t o f C hem istry, F acu lty o f Science, Y am ag ata U niversity, Y am ag ata 990, Ja p a n Z. N atu rfo rsch . 47b, 1 0 9 -1 1 4 (1 9 9 2); received June 6 /J u ly 22, 1991 E lectrochem istry, B inuclear C o p p er(II) C om plexes, C opper(I), Dioxygen T he cyclic voltam m o g ram s o f som e b inuclear co p p er(II) co m p o u n d s w ith binucleating li gands w here tw o m olecules o f trid e n ta te ligand, N ,N -bis(benzim idazol-2-ylm ethyl)am ine are linked by several alkyl chains, were m easured u n d er b o th argon and dioxygen. T he results dem onstrate th a t the bin u clear co p p er(I) species produced by electrochem ical red u ctio n exh ib it high reactivity to w ard s dioxygen, w hile the reaction o f the co rresponding m o n o n u clear spe cies w ith oxygen is very slow. T h in -lay er coulom etry ([binuclear c o p p e r(I)]/[0 2] = 0 .4 7 -10.6) and thin-layer cyclic v o ltam m etry ([binuclear c o p p e ^ I^ /fO J = 4 .3 -1 0 .6) revealed th a t tw o m olecules o f the binuclear co p p er(I) species react w ith one m olecule o f dioxygen. | | | |
Reference
| (Z. Naturforsch. 47b, 109 [1992]) | | | |
Published
| 1992 | | | |
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| default:Reihe_B/47/ZNB-1992-47b-0109.pdf | | | | Identifier
| ZNB-1992-47b-0109 | | | | Volume
| 47 | |
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