Wenxin Du

Synthesis and Crystal Structure of a New Copper–PMIDA Compound (H4PMIDA=H2O3PCH2N(CH2CO2H)2)

A new Cu(II)PMIDA compound [Cu(H2PMIDA)(phen)] ⋅ 3H2O (1) (H4PMIDA = H2O3PCH2N (CH2CO2H)2,phen = 1,10-phenanthroline) has been successfully synthesized and structurally characterized. In complex 1, Cu (II) is six coordinated by chelation in a tetradentate fashion by a PMIDA ligand and by two N atoms of a phen ligand. Every phen–Cu(II)–PMIDA group connects with each other via a hydrogen bond and the edge-to-face π-stacking interaction. Complex 1 crystallized in triclinic P-1 with cell dimensions of a = 7.5817(6) Å, b = 10.6980(8) Å, c = 13.1852(10) Å, α=82.350(2)°, β = 84.151(2)°, γ=78.4250(2), V= 1035.25(14) Å3, Z = 2, Dc = 1.677 Mg/m3.

catena-Poly[[bis­(4-chloro­methyl­pyridine-κN)cobalt(II)]-di-μ-dicyanamido-κ2N1:κ2N5]

The title compound, [Co(C2N3)(C6H6ClN)2]n, is a polymeric cobalt(II) complex with the metal ion located on an inversion centre. The CoII ion is six-coordinated by two N atoms of two 4-chloroxadmethylxadpyridine ligands and four N atoms from four dicyanamide ligands, forming a slightly distorted octaxadhedral configuration. In the crystal structure, neighbouring Co atoms are linked together by double dicyanamide bridges to form a polymeric cobalt(II) complex.