Synthesis and structure of [Nd(C6NO2H5)(3)(H2O)(2)](2n) center dot (3nHgCl(4)) center dot (4nH(2)O)

摘要

Hydrothermal reaction of NdCl3 center dot 6H(2)O, HgCl2 and isonicotinic acid gave a bimetallic 4f-5d metal-isonicotinato complex [Nd(C6NO2H5)(3)(H2O)(2)](2n) center dot (3nHgCl(4)) center dot (4nH(2)O) (1) and an X-ray crystal structure analysis reveals that it features a one-dimensional polycationic chain-like structure. The crystal belongs to the monoclinic, space group C2/c with a = 24.208(1), b = 20.842(1), c = 15.379(1) angstrom, beta = 127.759(1)degrees, V = 6134.5(7) angstrom(3), Z = 4, C36H46Cl12Hg3N6Nd2O20, M-r = 2198.44, D-c = 2.380 g/cm(3), S = 0.986, mu(MoK alpha) = 9.738 mm(-1), F(000) = 4112, R = 0.0384 and wR = 0.0848. The neodymium atom has a distorted square anti-prism geometry, coordinated by eight oxygen atoms. Each mercury atom is bound by four chlorine atoms to form a HgCl42- tetrahedron. The [Nd(C6NO2H5)(3)(H2O)(2)](2n)(6n+) species, HgCl42- anions and lattice water molecules are held together via hydrogen bonds to form a three-dimensional framework.