Si(SiMe_3)_2SiPh_3 – a ligand for novel sub-valent tin cluster compounds

R. Klink; C. Schrenk; A. Schnepf

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Si(SiMe_3)_2SiPh_3 – a ligand for novel sub-valent tin cluster compounds

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For the synthesis of metalloid tin cluster compounds applying the disproportionation reaction of a Sn(I) halide, silyl ligands, especially the symmetric Si(SiMe_3)_3 has proven to be extremely useful. Silyl ligands of lower symmetry where e.g. one SiMe_3 group is substituted with SiPh_3 are thereby unexplored, although the synthesis of the anionic silyl precursors is quite easy, referring to previously described methods. Here the synthesis of the silanide Si(SiMe_3)_2(SiPh_3)~? 3 as its potassium (3_K) as well as its lithium salt (3_(Li)) in excellent yield is presented. 3 proved to be a suitable starting material for the synthesis of subvalent tin compounds as shown by the reaction with tin halides in oxidation state +2 (SnCl_2) and +1 (SnCl); i.e. on the one hand the anticipated stannide Sn(Si(SiMe_3)_2SiPh_3)_2Cl~? could be isolated and on the other hand the unexpectedly partly substituted ring compound Cl_4Sn_4Si(SiMe_3)_2SiPh_3_4 is obtained. As no elemental tin is formed during the reaction with SnCl, metalloid tin clusters may be present in solution too, which is supported by the nearly black color of the reaction mixture, showing that 3 might be a suitable ligand for the synthesis of such cluster compounds.

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《Dalton transactions: An international journal of inorganic chemistry》 |2014年第42期|16097-16104|共8页
作者
R. Klink; C. Schrenk; A. Schnepf;
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作者单位

Institut für Anorganische Chemie, Universit?t Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.;

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正文语种英语
中图分类化学;无机化学;
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ligand; novel; compounds;

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2. ChemInform Abstract: Compounds Containing Silicon, Germanium, and Tin Polyhedra: The First Octahedral Tin Cluster [J] . M. WEIDENBRUCH Chem Inform . 1993,第29期

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Si(SiMe_3)_2SiPh_3 – a ligand for novel sub-valent tin cluster compounds

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