Syn- and anti-rotamers of the ortho-stereoisomer [Pt{(o-BrC6F4)N(CH2)2NEt2}Cl(py)]
Journal Publication ResearchOnline@JCUAbstract
The crystal structure of the ortho-isomer trans-[N-(2-bromo-3,4,5,6-tetrafluorophenyl)-N0,N0-diethylethane-1,2-diaminato(1-)]chloridopyridineplatinum(II), [PtBr0.1(C12H14BrF>4N2)Cl0.9(C5H5N)][PtBr0.4(C12H14BrF4N2)Cl0.6(C5H5N)] or [Pt{(o-BrC6F4)N(CH2)2NEt2}Cl(py)], 1o, revealed syn and anti rotamers in a 1:1 ratio in the solid state. 1o crystallizes in the centrosymmetric space group P1. The Pt-coordinated Cl ligand exhibits partial occupancy with Br, predominantly in the syn-rotamer. Notably, agostic interactions are observed between the Pt centre and a H atom of one of the ethyl groups. The ortho-isomer 1o was successfully isolated as a side product from the reaction of [Pt{H2N(CH2)2NEt2}Cl2], Tlnf2CO3 and C6F5Br. While the para-isomer [Pt{(p-BrC6F4)N(CH2)2NEt2}Cl(py)], 1p, is the main product, the higher solubility of 1o facilitates its isolation.
Journal
Acta Crystallographica Section C: Structural Chemistry
Publication Name
Acta Crystallographica Section C Structural Chemistry
Volume
81
ISBN/ISSN
2053-2296
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Issue
Pt 9
Pages Count
6
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Publisher
Wiley
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DOI
10.1107/S2053229625006837