S. Ng,, Chen-Yan Wei, V. Das
Nov 10, 1987
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0
Influential Citations
67
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Dimethylbis(2-pyridinethiolato- N -oxide)tin(IV), Me 2 Sn(2-SPyO) 2 , crystallizes in space group P 2 1 / c with a 9.877(3), b 11.980(4), c 13.577(3) A, β 109.1(2)° and Z = 4. The structure was refined to R F = 0.036 for 2263 Mo- K α observed reflections. The coordination geometry at tin is a skew-trapezoidal bipyramid, with the oxygen [SnO 2.356(3), 2.410(4) A] and sulfur [SnS 2.536(1), 2.566(1) A] atoms of the chelating groups occupying the trapezoidal plane and the methyl groups [SnC 2.106(6), 2.128(7) A] occupying the apical positions. The methyl-tin-methyl skeleton is bent [CSnC 138.9(2)°]. The SSnS angle is 77.8(1)°, but the OSnO angle is opened to 136.7(1)° to accommodate the intruding methyl groups. The carbontincarbon angles predicted from quadrupole splitting ( 119m Sn Mossbauer) and one-bond 119 Sn 13 C coupling constant (solution 13 C NMR) data agree closely with the experimental value.