Abstract
The reaction of Me 2N(CH 2) 3SnPh 3 ( 1) With phenol gives Me 2N(CH 2) 3Sn(OPh) n Ph (3- n) ( 2, n = 1; 3, n = 2) in good yields. All the phenyl groups are cleaved off when 1 is treated with glycol or pinacol, resulting in the formation of [Me 2N(CH 2) 3Sn] 2(OC 2H 4O) 3 ( 4) and [Me 2N(CH 2) 3Sn] 2(OC 2Me 4O) 3 ( 5), respectively. Compounds 4 and 5 are transformed almost quantitatively into Me 2N(CH 2) 3Sn(SPh) 3 ( 6) and [Me 2N(CH 2) 3SnCl 4] −H + ( 7) by reaction with phenyl mercaptan and trimethylchlorosilane, respectively. The reaction of 2 with triethanolamine and nitrilotriacetic acid affords the new stannatrane Me 2N(CH 2) 3Sn(OCH 2CH 2) 3N ( 8) and Me 2N(CH 2) 3Sn(OCOCH 2) 3N ( 9), respectively. However, the N-oxide derivative Me 2(O)N(CH 2) 3Sn(OCOCH 2) 3N ( 10) is obtained by reaction of 1 with N(CH 2COOH) 3 in DMF. Compounds 1- 10 have been characterized by means of 1H, 13C and 119Sn NMR spectroscopy and mass spectrometry. The crystal structures of Me 2N(CH 2) 3Sn(SPh) 3 ( 6) and Me 2(O)N(CH 2) 3Sn(OCOCH 2) 3N ( 10) have been determined by an X-ray diffraction study. The tin atom in 6 is trigonal bipyramidal with an intramolecular SnN distance of 2.605(6) Å. Compound 10 contains an octahedral tin with intramolecular SnN and SNON distances of 2.231(7) and 2.101(7) Å, respectively.
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