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Double-C,N-chelated tri- and diorganotin(IV) fluorides
Authors: Novák Petr | Brus Jiří | Císařová Ivana | Růžička Aleš | Holeček Jaroslav
Year: 2005
Type of publication: článek v odborném periodiku
Name of source: Journal of Fluorine Chemistry
Publisher name: Elsevier Science SA
Place: Lausanne
Page from-to: 1531-1538
Titles:
Language Name Abstract Keywords
cze Double-C,N-chelated tri- and diorganotin(IV) fluorides Attempts to fluorinate the compounds (L-CN)(SnPhCl)-Sn-2 (1), (L-CN)(2)SnCl2 (2), (L-CN)(2)SnBr2 (3), (L-CN)(2)SnI2 (4) and (LSnPhCl2)-Sn-CN (5), where LCN is {2-[(CH3)(2)NCH2]C6H4}(-), were made by four different methods. The fluorinated monomeric five-coordinated analogue of 1 was made by fluorination of I with KF/18-crown-6 ether and by metathetical fluorination with 10 ((LSnBu2F)-Sn-CN). The fluorinated monomeric six-coordinated analogue ((L-CN)(2)SnF2(7)) of diorganotin compounds 2-4 was made easily by all methods used in adequate yield. The fluorination of 5 by all methods did not lead to the monomeric product and phenyl group migrations were observed during the course of these reactions. The most clear is the reaction of 5 with two equivalents of 10 leading to, presumably, a fluorinated analogue of 5 having a trimeric structure, which reacts immediately with three equivalents of NH4F in methanol to give the complex compound NH4+[(LPhSnF3)-Ph-CN](-) in quantitative yield. Compound 7 reveals high fluorination activity towards titanocene dichloride. (c) 2005 Elsevier B.V. All rights reserved. organotin(IV) compounds; fluoride; C,N-ligand; structure
eng Double-C,N-chelated tri- and diorganotin(IV) fluorides Attempts to fluorinate the compounds (L-CN)(SnPhCl)-Sn-2 (1), (L-CN)(2)SnCl2 (2), (L-CN)(2)SnBr2 (3), (L-CN)(2)SnI2 (4) and (LSnPhCl2)-Sn-CN (5), where LCN is {2-[(CH3)(2)NCH2]C6H4}(-), were made by four different methods. The fluorinated monomeric five-coordinated analogue of 1 was made by fluorination of I with KF/18-crown-6 ether and by metathetical fluorination with 10 ((LSnBu2F)-Sn-CN). The fluorinated monomeric six-coordinated analogue ((L-CN)(2)SnF2(7)) of diorganotin compounds 2-4 was made easily by all methods used in adequate yield. The fluorination of 5 by all methods did not lead to the monomeric product and phenyl group migrations were observed during the course of these reactions. The most clear is the reaction of 5 with two equivalents of 10 leading to, presumably, a fluorinated analogue of 5 having a trimeric structure, which reacts immediately with three equivalents of NH4F in methanol to give the complex compound NH4+[(LPhSnF3)-Ph-CN](-) in quantitative yield. Compound 7 reveals high fluorination activity towards titanocene dichloride. (c) 2005 Elsevier B.V. All rights reserved. organotin(IV) compounds; fluoride; C,N-ligand; structure

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