Synthesis and crystal structure of 18-crown-6 complexes with Na2[M(mnt)2] (M = Cu, Ni)

Reactions of 18-crown-6 (18-C-6) with Na-2[M(mnt)(2)] [M = Cu, Ni; mnt = 1,2-dicyanoedhene-1,2-dithiolate, C2S2 (CN)(2)(2-)] were studied and the novel complexes ([Na(18-C-6)] [Na(18-C-6)-(H2O)])-[Cu(mnt)(2)] (1) and [Na(18-C-6) (H2O)](2)[Ni(Mnt)(2)] . (18-C-6) (2) were characterized by elemental analysis, IR and X-ray diffraction analysis. I and 2 belong to triclinic, space group P (1) over bar widi cell dimensions: 1, a = 1.22697(19) nm, b = 1.22780 (19) mn, c = 1.5665 (3) mn, alpha = 95.083 (3)degrees, beta = 101.534(3)degrees, gamma = 91.007(3)degrees, V = 2.3016(6) nm(3), Z = 2, D-calcd = 1. 350 g/cm(3), F(000) = 976, R-1 = 0.0726, wR(2) = 0.1843 and 2, a = 1.11620(17) mn, b 1.22054 (18) mn, c = 1.27939 (18) nm, a = 111.647 (2)degrees, beta = 92.792(3)degrees, gamma = 103.201 (2)degrees, V = 2.5461 (4) nm(3), Z = 1, D-calcd = 1.304 g/cm(3), F(000) = 642, R-1 = 0.0459, wR(2) = 0.1003. 1 Displays a one - dimensional chain of [Na(18-C-6)](+) Complex cations and [Cu(mnt)(2)](2-) complex anion bridged by Na - N interactions. The complex cation [Na(18-C-6)(H2O)](+) serves as a balancing charge in crystal. In 2, two [Na(18-C-6)(H2O)](+) complex cations and a [Ni(mnt)(2)](2) - complex anion form a stable neutral complex through Na - N binding.