ll] Crystal data for 1.1.7MeCN: C,, 4H6s lCI,~N~3,,Ni,018, M, = 2310, triclinic, PT. a=13.706(7), b=15.216(9), c=15.431 (8)A, a=60.68(5), p = 67.15(4), = 69.33(4)", V = 2532 A', Z = 1 (the molecule lies on an inversion center), pcSlrd =1.515 gem-', T = 220.0(2) K, crystai size 0.51 ~0 . 1 9~ 0.16 mm. ~(CU,,) = 5.33 rnm-'. Crystal data for 2: C,6H6,CI,,N,,Ni,0,0, M, = 2180, monoclinic, P2,/n, a =12.502(4), b =19.917(6), c =17.601(4)A, fl = 106.2312)'. V = 4208 A', Z = 2 (the molecule lies on an inversion center), peslcd = 1.720 gcm-', T = 220.0(2) K, crystal size 0.31 x 0.27 x 0.19 mm, p(MoK,) = 1.99 mm-'. Crystal data for3: C84H,6C116N,8Ni,0,8, M , = 2701, monoclinic, C2,c, a = 31.570(3), b =12.784(2), c = 25.371(3) A, a = 101.160(10)". C'=10046A3, Z = 4 (the molecule lies on a twofold axis), pESICd = 1.786 gcm-', T = 220.0(2) K, crystal size 0.23 x0.16xO.16 mm, ~(CU,.) = 6 33 mm-I. Crystal data for 4.3EtOAc: C,,,H,,CI,8C~gN,8024, M , = 3108, rhombohedral, R~c , a = 18.298(2), c = 67.570(8) A, V = 19593 A' , 2 = 6 (the molecule lies on 32 site), pCsrca =1.581 g~m -~,