Synthesis and spectral studies of diorganotin heterocyclic dithiocarbamate complexes and crystal structures of (2‐F‐Bz)2Sn(Cl) S2CN(CH2CH2)2NEt and (3‐Cl‐Bz)2Sn [S2CN(CH2CH2)2NEt]2 ⋅ 0.5HN(CH2CH2)2NH

Some new diorganotin(IV) complexes of heterocyclic dithiocarbamate having general formula R₂Sn(Cl)S₂CNR'₂ and R₂Sn(S₂CNR'₂)₂ R = 2‐F‐Bz, 3‐Cl‐Bz; NR'₂ = N(CH₂CH₂)₂NMe, N(CH₂CH₂)₂NEt, and N(CH₂CH₂)₂NBz] have been prepared, respectively. Elemental analyses, IR, and NMR spectral data characterized all compounds. The crystal structures of (2‐F‐Bz)₂Sn(Cl)S₂CN(CH₂CH₂)₂NEt 2 and (3‐Cl‐Bz)₂SnS₂CN(CH₂CH₂)₂NEt]₂ ⋅ 0.5 HN(CH₂CH₂)₂NH 5 were determined by single crystal X‐ray diffractometer. In the crystal of complex 2 , the tin atom is rendered five‐coordination in a trigonal bipyramidal configuration by coordinating with S atoms of dithiocarbamate groups. For complex 5 , the central Sn atom exists in a skew‐trapezoidal planar geometry defined by two asymmetrically coordinated dithiocarbamate ligands and two 3‐chlorobenzyl groups. © 2005 Wiley Periodicals, Inc. 16:271–277, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20096