Structural characterization of the reaction products of vanadium(II) and endrin as the two isomers of 1,8,exo-9,10,11-pentachloropentacyclo[220.127.116.11,6.O2,7O4,10]dodecan-5-one
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Two dechlorinated products (B) and (D), formed in the reaction between endrin (C12H8Cl6O) and vanadium(II) for the purpose of confirmation of identity, are shown by single-crystal X-ray structure determination to be isomers of the title compound, C12H9Cl5O. Crystals of both are monoclinic, P21/c. For isomer (B), a 7.432(8), b 12.76(1), c 14.55(2) Š, ߠ108.32(9)ꬠZ=4; R was 0.038 for 2594 observed reflections. For isomer (D), a 9.037(4), b 12.004(4), c 14.436(6) Š, ߠ124.91(2)ଠZ= 4; R was 0.041 for 1826 reflections. The geometries of the two isomers are compared.
Australian Journal of Chemistry