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short communications
Crystal data for TPPO and BDPPO complexes with cobalt (II) thiocyanate, space group R32 (a = 17.50±0.06 Å, b = 30.99±0.08 Å) and Pbcn (a = 10.10±0.01 Å; b = 20.22±0.03 Å; c= 18.94±0.01 Å), respectively, suggest C2 as the only compatible symmetry for both complexes. Optical, morphological and X-ray powder data are given.