Abstract
Triphenylphosphine and -arsine react with tin(IV) nitrate in carbon tetrachloride to afford dinitratotin(IV) bis(diphenylphosphonate and arsonate), (Ph 2EO 2) 2Sn(NO 3) 2 (E = P and As), respectively, as white amorphous solids These compounds are suggested to have polymeric structures involving bridging phosphonate or arsonate groups and unidentate nitrate groups raising the coordination number of tin to six. Polymeric {OSn(NO 3) 2} is obtained from the reaction of tin(IV) nitrate with nitric oxide in both carbon tetrachloride solution and the gas phase. Again the tin atom is considered to be six coordinated by oxygen atoms from bridging oxide and bidentate or bridging nitrate groups. Solvolysis occurs on dissolution of tin(IV) nitrate in acetic or trifluoroacetic acids and their anthydrides. From acetic acid or anhydride, tin(IV) acetate, Sn(O 2CCH 3) 4, was isolated as a white crystalline solid but the nitronium salt 2NO + 2 {Sn(O 2CCF 3) 2− 6} was recovered from trigluoroacetic anhydride, whilst the acid solvate 2NO + 2{Sn(O 2CCF 3) 2− 6}·CF 3CO 2H was obtained from trifluoroacetic acid.
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