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Subvalent Group 4 8 Metal Alkyls and Amides. Part 111.l Mossbauer Spectroscopy Studies of Bis[bis(trimethylsilyl)methyl]tin(ii) and its D e r i vat i ves t

The ll9Sn Mossbauer data and electronic reflectance spectra of the cubic caesium tin(l1) halides CsSn Br,-ZCI, ( x = 0-3) and their behaviour on heating suggest that the non-bonding tin(ll> electrons may be involved in a band structure rather than being located in non-bonding molecular orbitals in these materials.