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A Zwitterionic Distannene and Two (RSnX)4 Cages with an Unusual Arrangement of the Sn4X4 Cluster Atoms (R = tBu3Si, × = Se, Te) (1998)

Weidenbruch, Manfred ; Stilter, Artur ; Marsmann, Heinrich ; [et al.]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1333-1336

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ISSN: 1434-1948

Keywords: Tin ; Silicon ; Chalcogens ; Cluster compounds ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Reaction of tin(II) chloride with RNa(THF)2 (R = tBu3Si) in THF at -30 °C led to a complex reaction mixture, from which the compounds R4Sn4(THF)2, R2SnSnR2 (5), R-R (7), and a brownish black compound 6 were isolated. In toluene as solvent, the zwitterionic distannene 5 was obtained together with 7 and 6 which upon treatment with Et3PX, furnished the cluster compounds (RSnX)4 (10: × = Se; 11: × = Te). The X-ray structure analyses of the isotypic compounds 10 and 11 revealed that the tin atoms occupy the corners of an undistorted tetrahedron with weak tin-tin interactions. The chalcogen atoms form a plane which bisects the Sn4 tetrahedron.

Type of Medium: Electronic Resource

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