无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2006年
10期
1861-1866
,共6页
1,3-二-(4-羧基吡啶基)丙烷%双甜菜碱衍生物%硫氰酸盐%Cd(Ⅱ)配位聚合物
1,3-二-(4-羧基吡啶基)丙烷%雙甜菜堿衍生物%硫氰痠鹽%Cd(Ⅱ)配位聚閤物
1,3-이-(4-최기필정기)병완%쌍첨채감연생물%류청산염%Cd(Ⅱ)배위취합물
1,3-bis(pyridinio-4-carboxylato)propane%double betaine derivative%thiocyanate%cadmium(Ⅱ) coordination polymer
A new coordination polymer of Cd(Ⅱ) was prepared by the reaction of Cd(ClO4)2· 6H2O with mixed ligands, namely, neutral double betaine derivative 1,3-bis(pyridinio-4-carboxylato)propane and SCN- anion in aqueous solution. The crystal structure of 1 has been determined by single-crystal X-ray diffraction methods. Crystal data for 1: orthorhombic, space group P212121, a=1.0509(2), b=1.162 8(2), c=1.649 5(3) nm, V=2.015 7(7) nm3, Z=4, F(000)=1 064, Dc=1.756 g·cm-3, the final R=0.050 8 and wR=0.130 1 for 3 530 observed reflections [I＞2σ(I)].Crystal structure of 1 indicates that the (μ-1,3-NCS) bridging NCS- ligand connects neighboring cadmium atoms,leading to a single strand helical chain which propagates along crystallographic a axis. The metallic nodes of adjacent helical chains are linked by monodentate-monodentate coordination mode of both carboxylate groups in L molecules to generate 2D coordination sheet which parallels to the (001) plane. Adjacentlayers are further joined by C-H…O hydrogen bonds; the structure thus expanded into a three-dimensional network. CCDC: 612657.
