STRUCTURE OF CIS-DIAQUABIS(HEXAFLUOROACETYLACETONATO)NICKEL(II)

C10H6F12NiO6, M(r) = 508.9, monoclinic, C2/c, a = 21.195 (5), b = 8.247 (2), c = 9.741 (2) angstrom, beta = 95.91 (2)-degrees, V = 1693.6 (7) angstrom 3, D(x) = 1.996 Mg m-3, Z = 4, mu = 1.298 mm-1, lambda(Mo K-alpha) = 0.71073 angstrom, F(000) = 1000, T = 298 K, R = 0.0369 and wR = 0.0645 for 157 variable parameters (S = 0.59) and 1112 reflections with F > 0-sigma(F). The Ni atom possesses an octahedral geometry and forms bonds to the O atoms of two chelating F6acac ligands that occupy both axial and equatorial positions [Ni-O(1) 2.026 (3) angstrom; Ni-O(2) 2.027 (2) angstrom]. The two molecules of water are coordinated in a cis configuration [Ni-O(3) 2.054 (3) angstrom] and the structure possesses C2 point group symmetry.