PREPARATION AND SPECTROSCOPIC STUDY OF 1:2 ADDUCTS OF DIMETHYLTIN(IV)DICHLORIDE WITH AROMATIC N-OXIDES (IQNO, 4-C1QNO, 4-MeQNO, 6-MeOQNO AND 4-PhPyNO). CRYSTAL AND MOLECULAR STRUCTURE OF TRANS-DICHLORODIMETHYL BIS(4-PHENYLPYRIDINE-TV-OXIDE)TIN(IV)

Abstract

Five adducts of general formula Me2SnCl2L2 [L = IQNO(isoquinoline-N-oxide), 4-C1QNO, 4-MeQNO, 6-MeOQNO (6-methoxyquinoline-N-oxide) and 4-PhPyNO (4-Phenylpyridine-Af-oxide)] have been prepared by the addition of L to chloroform solutions of Me2SnCl2. The adducts have been characterized by analysis and spectroscopic (1R, 1H, 13C and Mössbauer) data. Structural predictions were derived from 119Sn NMR parameters such as 1 J(119Sn-13C) and 2 J(119Sn-1H). The single crystal diffraction study of the adduct Me2SnCl2(4-PhPyNO)2 shows the metal to be six-coordinate inan all trans-octahedral configuration; Sn-O and Sn-CI distances are 2.227(2) and 2.5774(9)Å, respectively, and the CH3-Sn-CH3 bond angle is 180.0°.