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Nathan Hollingsworth Graeme A. Horley Muhammed Mazhar Mary F. Mahon Kieran C. Molloy Peter W. Haycock Christopher P. Myers Gary W. Critchlow 《应用有机金属化学》2006,20(10):687-695
Tin(II) methoxide reacts with N,N′‐dimethylaminoethanol (dmaeH) to yield Sn(dmae)2 ( 1 ) along with small amounts of the hydrolysis product Sn6(O)4(dmae)4 ( 2 ). The geometrically more regular iso‐structural cage Sn6(O)4(OEt)4 ( 3 ) was obtained as the only tractable product isolated from reaction of 2 and Sb(OEt)3, while 1 reacted with CdX2 (X = acac, I) to afford Sn(dmae)2Cd(acac)2 ( 4 ) and Sn(dmae)2CdI2 ( 5 ). The X‐ray structures of 2, 3 and 4 are reported. Decomposition of 4 under aerosol‐assisted chemical vapour deposition conditions leads to amorphous tin oxide films with no detectable cadmium (i.e. ca < 2% cadmium), rather than a stoichiometric Sn:Cd oxide. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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《中国化学快报》2023,34(1):107207
To investigate the reactivity of homoatomic clusters [E9]4? (E = Si-Pb) and intermetalloid clusters [M@E9]q?, the reactions of the Zintl anions [Sn9]4? and [Ni@Sn9]4? with the CdMes2 (Mes = Mesitylene) in the presence of 2.2.2-crypt were carried out. Two new compounds [K(2.2.2-crypt)]6[(Sn9)Cd(Sn9)]·en (1) and [K(2.2.2-crypt)]6[(Ni@Sn9)Cd(Ni@Sn9)]·en (2) were afforded. Both 1 and 2 were characterized by single-crystal X-ray diffraction, energy dispersive X-ray (EDX), and electrospray ionization mass spectrometry (ESI-MS), and can be viewed as two [Sn9]4? or [Ni@Sn9]4? subunits bridged by Cd ion in an η3:η3 coordination mode. Quantum chemical calculations reveal the relationships between the geometries and electronic structures of clusters 2a, [Ni3Ge18]4? and [Cu4@Sn18]4?. Further electron localization technique (AdNDP method) was performed to explain chemical bonding patterns of 1a. 相似文献
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Shoufeng Yang Peter Y. Zavalij M. Stanley Whittingham 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(3):228-229
Hydrothermally prepared dilithium tin hexahydroxide crystallizes in the monoclinic system (space group P21/n), with the Sn atom at a site with symmetry and all other atoms in general positions. The Sn coordination polyhedron is made up of six hydroxide groups. The Li atom is tetrahedrally coordinated by oxygen, with the tetrahedra sharing two corners and one edge with the adjacent Sn octahedra. Hydrogen bonds between the OH groups provide additional bonds in the framework. 相似文献
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HUA Wan-Sen CHEN Shou-Wen YANG Xu-Jie LU Lu-De WANG XinMaterials Chemistry Laboratory Nanjing University of Science Technology Nanjing Jiangsu China 《中国化学》1997,(1)
Mossbauer spectroscopy has been applied to the investigation of reaction of Sn[Fe(CN)6] on magnesia, 7-alumina, silica and activated carbon. It was found that the thermal decomposition products of supported Sn[Fe(CN)6] are quite different from those of the unsupported one as a result of the interaction between the complex and supports. The supports could promote the oxidation in the air atmosphere and their effect led to high dispersion of the decomposition products on the surface. 相似文献
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The title compound was synthesized in an attempt to produce stacked benzene-like Sn6(6-) rings separated by alkaline-earth cations in analogy with the recently reported stacks of aromatic cyclopentadienyl-like Sn5(6-) in Na8BaSn6 (in addition to isolated Sn4- anions). The resulting compound, synthesized from a stoichiometric mixture of the elements at high temperature, has the "correct" stoichiometry with six tin atoms and six positive charges. However, the rings of Sn6(6-) are puckered into chair-type cyclohexanes that are interconnected into isolated cylindrical tubes stuffed with Ca2+ between the rings. Such tubes, if fused to each other, form the hexagonal diamond structure. The new compound is electronically balanced according to magnetic and four-probe resistivity measurements. Reported are also the synthesis and properties of Na10EuSn12 and Na10YbSn12 which are isostructural with the known Na10CaSn12. 相似文献
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Ionic Crown Ether Complexes of Tin(II) and Tin(IV): [Sn(15-Crown-5)][SnCl6] and [SnCl3(18-Crown-6)]2[Sn2Cl10]; Syntheses, IR Spectra, and 119Sn-Mössbauer Spectra [Sn(15-crown-5)][SnCl6] ( 1 ,) has been prepared by the reaction of SnCl2, SnCl4, and 15-crown-5 in the molar ratio of 1 : 1 : 1 in acetonitrile solution, forming a white insoluble crystal powder. [SnCl3(18-crown-6)]2[Sn2Cl10] ( 2 ,) as well as [SnCl3(18-crown-6)][BiCl4] · CH3CN ( 3 ,) are prepared by the reaction of SnCl4 with 18-crown-6 (molar ratio 2 : 1), and of SnCl4, 18-crown-6, and BiCl3 (molar ratio 1 : 1 : 1), respectively. According to IR-spectroscopy and 119Sn-Mössbauer-spectroscopy 1–3 , have ionic structures; the cation of 1 , being polymeric via a sandwich-like structure. 相似文献
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Mössbauer absorption spectra of rare-gas matrix-isolated SnX4 and SnX2 molecules (X = F, Cl, Br, I) have been measured at matrix temperatures of a bout 5 K. The hyperfine interaction (hfi) parameters of 119Sn in argon matrix-isolated SnX4 (X = Cl, Br, 1) molecules are identical with those of the corresponding crystalline compounds. This fact reveals that the inter-molecular interactions are negligible in the crystalline compounds as far as concerning the electronic structure of Sn4+. The 119Sn hfi parameters of rare-gas matrix-isolated SnX2 molecules differ from those measured in the crystallin compounds. This arise from the totally different coordination of tin in the two situations. The analysis of the hfi parameters using a simple bonding model yields information about the ionicity of the Sn-halogen bonds and the bonding angle in these molecules. The observed isomer shifts and quadrupole interactions can only be explained in this model with a bonding angle θ = 95° ± 2° for all SnX2 molecules and a slight increase of θ from Sn12 to SnF2. 相似文献