CRYSTAL STRUCTURE OF BIS(O-AMYLDITHIOCARBONATO)BIS(3-BROMOPYRIDINE)NICKEL(II)

Gurvinder Kour, . Neerupama, Renu Sachar, Rajni Kant

Abstract


The complex crystallizes in orthorhombic crystal system with space group Pbca. The unit cell parameters are: a= 12.346(15) Å, b= 9.0931(9)Å, c=  25.136(5)Å,   Z=4. The asymmetric unit comprises of half molecule with nickel(II) cation lies on an inversion centre. The Ni(II) atom is coordinated in a distorted octahedral arrangement. The variation in C–S  bond  lengths involving the xanthate ligands indicates the presence of double bond character due to delocalization over the two C–S bonds. The crystal structure was refined to a final reliability index (R-value) of 0.0594 for 1714 observed reflections. The amyl chain attached to the dithiocarbonato group contains disorder over two sets of sites with occupancy ratios of 0.683: 0.317. The crystal structure is stabilized by weak C-H…π interactions.

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DOI: http://dx.doi.org/10.17628/ecb.2015.4.246-248

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