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Synthesis and Structure of Organotin(IV) Complexes of Maltol
Author(s) -
Bhattacharya Subrato,
Seth Neena,
Gupta Vishnu D.,
Nöth Heinrich,
Polborn Kurt,
Thomann Martina,
Schwenk Holger
Publication year - 1994
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19941271013
Subject(s) - maltol , chemistry , pentagonal bipyramidal molecular geometry , bipyramid , crystallography , crystal structure , octahedron , stereochemistry , molecule , octahedral molecular geometry , medicinal chemistry , organic chemistry
A series of organotin(IV) maltol complexes R 4 — x SnL x ( 1–4, 6 ; x = 1–3) and the dichloro‐compound Cl 2 SnL 2 ( 5 ) have been prepared and characterized on the basis of their IR‐, 1 H‐, 13 C‐ and 119 Sn‐NMR data. While an X‐ray crystal structure analysis of Ph 2 SnL 2 ( 4 ) and Cl 2 SnL 2 ( 5 ) reveals distorted cis ‐octahedral structures, the Me 2 SnL 2 molecule ( 2 ) adopts a skew‐trapezoidal bipyramidal configuration with a very significant difference in the Sn‐O(keto) bond distances. The tris‐maltol complex BuSnL 3 ( 6 ) exhibits a distorted pentagonal‐bipyramidal geometry with the butyl carbon and a hy‐droxy oxygen constituting the axial orientations.