Crystal Structures of Bis(pyrrolidinedithiocarbamato)-nickel(II) and -copper(II) (Redeterminations)

Abstract

Single-crystal X-ray redeterminations of the title compounds have been carried out at 295 K, by using diffractometer , rather than film data. [Ni(S₂CN(CH₂)₄)₂], (1), and [Cu(S₂CN(CH₂)₄)₂], (2), are isomorphous and triclinic, pī , with Z = 1, the metal atom being located on a crystallographic inversion centre. The structure of (1), a 7.470(2), b 7.972(3), c 6.325(3) Ǻ, α 103.17(3), β 93.48(3)°, γ 75.45(3)°, yielded R 0.038 for 1041 independent 'observed' reflections; for (2), a 7.477(3), b 8.057(2), c 6.373(1) Ǻ, α 104.77(1), β 94.06(2), γ 76.60(2)°, R was 0.033 for 1037 reflections. Ni-S are 2.214(1), 2.198(1) Ǻ; Cu-S are 2.312(1), 2.280(1) Ǻ.