Thallium(I), Silver(I), and Mixed Thallium(I)/Copper(I) Clusters with Bridging {Me2Si(N‐C6H4‐2‐SPh)2}2– Ligands |
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Authors: | Phil Liebing Kurt Merzweiler |
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Affiliation: | Institut für Chemie, Naturwissenschaftliche Fakult?t II, Universit?t Halle, Kurt Mothes‐Str. 2, 06120 Halle, Germany |
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Abstract: | The S‐functionalized aminosilane Me2Si(NH‐C6H4‐2‐SPh)2 (H2L) ( 1 ) was prepared from dichlorodimethylsilane and lithiated 2‐(phenylthio)aniline. Treatment of compound 1 with two equivalents of n‐butyllithium led to the dilithium derivative Li2L, which was used in subsequent reactions with MCl (M = Tl, Cu, Ag) to prepare the complexes [Tl2L] ( 2 ), [Cu2Tl2L2] · 2THF ( 3a ), [Cu2Tl2L2(THF)2] ( 3b ), and [Ag4L2(THT)2] ( 4 ) (THT = tetrahydrothiophene). Compound 2 consists of two thallium atoms, which are connected by a L2– ligand to give a puckered Tl2N2 ring with Tl–N distances of 255(1)–268(1) pm. Compounds 3a and 3b are heterobimetallic complexes, which are based on [Cu2L2]2– cores featuring a Cu2N4Si2 ring with linearly coordinated copper atoms [Cu–N: 190.7(3)–192.5(3) pm] and two peripherally attached Tl atoms [Tl–N: 272.7(3)–281.9(3) pm]. The molecular structure of the tetranuclear silver(I) complex 4 is closely related to the structure of compounds 3a and 3b by replacement of the Cu and Tl atoms with Ag atoms. The Ag–N distances are 217.5(3)–245.7(3) pm. |
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Keywords: | Thallium Copper Silver Silylamide Cluster compounds |
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