共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
Karl Eberhard Bessler Lincoln Lucílio Romualdo Paulo de Tarso Salviano Filho Victor Marcelo Deflon Ccilia Maichle‐Mssmer 《无机化学与普通化学杂志》2001,627(4):651-654
Preparation and Crystal Structures of Dicyanamido(triphenylphosphane)gold(I) and Nitrosodicyanomethanido(triphenylphosphane)gold(I) The coordination compounds [(Ph3P)Au{N(CN)2}] ( 1 ) and [(Ph3P)Au{ONC(CN)2}] ( 2 ) are obtained by the reaction of [Au(PPh3)]NO3 with Na[N(CN)2] or K[ONC(CN)2] in CH2Cl2. The compounds are characterized by IR spectroscopy and by crystal structure determination. 1 crystallizes triclinic in the space group P 1 with a = 930.16(4), b = 1011.89(13), c = 1118.35(16) pm, α = 115.327(10), β = 90.899(8), γ = 103.394(8)°, Z = 2. 2 crystallizes monoclinic in the space group P21/n with a = 832.59(10), b = 1139.30(16), c = 2078.9(4) pm, β = 99.84(2)°, Z = 4. The crystal structures of both compounds are built up by pairs of antiparallel oriented molecules with linear coordinated gold atoms and weak intermolecular Au–N‐interactions. 相似文献
3.
The Complexes [Pd(PEt
3)2
dtc]X (1) and Pd(PR
3)Xdtc (2, 3) (dtc=S2CNEt
3;X=Cl, Br, I;R=Et, Ph) have been prepared. Conductivity, susceptibility, UV and IR measurements show that the cations [Pd(PEt
3)2
dtc]+ of1 and the complexes2, 3 have square-planar structure. 相似文献
4.
Lithium Bis(silyl)amides and Tris(silyl)amines Synthesis and Crystal Structures Lithiated di-tert-butylfluorosilylamine reacts with difluorosilanes by substitution ( 1, 2 ). The siloxy-( 3, 4 ) and tert-butyloxy-( 5 )-silylamines are formed in reaction of 1 and 2 with LiOR (R = SiMe3, CMe3). The lithium derivatives of 3 and 4 are dimers forming an (LiFSiN)2-eight-membered ring ( 6, 7a ). Using 12 crown-4 the amide and the coordinated lithium are forming free ions ( 7 c ). The lithium derivative of 5 ( 8 ) crystallizes as a dimeric LiF-adduct of an iminosilane, forming a LiF-four-membered ring. In thf 7 reacts with Me3SiCl by a fluorine/chlorine exchange and 9 is obtained. In 9 lithium is coordinated with nitrogen, oxygen and two thf molecules, forming an (SiNOLi)-four-membered ring. 6 and 7 react with fluorosilanes to give tris(silyl)amines 10 – 12 . 相似文献
5.
6.
7.
H. Specker 《Fresenius' Journal of Analytical Chemistry》1959,166(2):142-143
Ohne Zusammenfassung 相似文献
8.
9.
Diorganyltellurium Bis-(dialkylcarbamates) and -(dithiocarbamates) Compounds of the type R2Te(X2CNR′2)2, with R ? C6H5, CH3; R′ ? CH3, C2H5, i-C3H7, c-C6H11, C6H5, and X ? S, are obtained by reaction of dimethyltellurium with tetraorganyl-thiuram-disulfides. Dimethyltellurium diiodide or diphenyltellurium dichloride react with sodium dithiocarbamates or with in situ prepared ammonium dithiocarbamates. Some compounds can be synthesized by reaction of diphenyltellurium oxide with amine in solutions of carbon disulfide. The synthesis of diphenyltellurium- and dimethyltellurium bis-(dimethylcarbamates) results from the interaction of diorganyltellurium diethanolate with dimethylammonium dimethylcarbamate. Decomposition reactions of the compounds in solid and solution are studied 1H-NMR, 13C-NMR, and mass spectroscopically. Diorganyltellurium diethylen-bis-(N,N′-dimethyldithiocarbamates) are obtained by reaction of dimethyltellurium diiodide or diphenyltellurium dichloride and sodium ethylen-bis-(N,N′-dimethyldithiocarbamate) as polymeric products. 相似文献
10.
H. Freytag 《Fresenius' Journal of Analytical Chemistry》1962,185(4):335-336
Ohne Zusammenfassung 相似文献
11.
12.
L. Sommer 《Analytical and bioanalytical chemistry》1962,186(2):320-320
13.
14.
15.
K. Söllner 《Fresenius' Journal of Analytical Chemistry》1966,217(5):385-386
Ohne Zusammenfassung 相似文献
16.
Annemarie Hollstein 《Fresenius' Journal of Analytical Chemistry》1961,182(6):446
Ohne Zusammenfassung 相似文献
17.
18.
19.
Peter Wipf Roland Prevo Jost H. Bieri Gabriel Germain Heinz Heimgartner 《Helvetica chimica acta》1988,71(5):1177-1190
Thermal Generation and Reactions of (Benzylthio)-and (Arylthio)-Substituted Nitrile Ylides Thermolysis of 4-(benzylthio)- and 4-(arylthio)-1,3-oxazol-5(2H)-ones 6 , at 110–155° in the presence of dipolarophiles with activated C≡C, C?C, C?O, C?S, and N?N bonds, led to 5-membered cyclo-adducts and CO2 (cf. Schemes 3, 5-7). Heating 6a and 6c in the presence of ethyl propiolate yielded ethyl quinoline-3-carboxylate ( 19 ) and ethyl pyridine-3-carboxylate( 22 ), respectively (cf. Scheme 8). These results are rationalized on the basis of the intermediate formation of thio-substituted nitrile ylides of type 7 (cf. Scheme 2), which undergo regioselective 1,3-dipolar cycloadditions with reactive dipolarophiles. In the absence of such a dipolarophile, the nitrile ylides isomerize via a [1,4]-H shift to give 2-aza-1,3-butadienes of type 20 . The latter are trapped in a Diels-Alder reaction with ethyl propiolate (cf. Scheme 8). 相似文献