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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >1D and 3D coordination polymers with the M(mu(1),mu(1)-X)(2)M motif (M = Na, Zn, Cd): Observation of a linear [Na(H2O)(4)](n)(n+) cation and a five-connected sqp-net
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1D and 3D coordination polymers with the M(mu(1),mu(1)-X)(2)M motif (M = Na, Zn, Cd): Observation of a linear [Na(H2O)(4)](n)(n+) cation and a five-connected sqp-net

机译：具有M（mu（1），mu（1）-X）（2）M主题（M = Na，Zn，Cd）的1D和3D配位聚合物：线性[Na（H2O）（4）]（ n）（n +）个阳离子和五个连接的sqp网

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Three polymeric complexes [Zn(pydz)(N-3)(SO4)](n)[Na(H2O)(4)](n)(H2O)(4n) (1), [Cd(3-ampy)(N-3)Cl](n) (2), and [Cd(DENA)Cl-2(H2O)](n)(3), (pydz = pyridazine or 1,2-diazine, 3-ampy = 3-aminopyridine, DENA = NN-diethylnicotineamide) have been synthesized and characterized by spectral and structural methods and their network topologies analysed. Complex 1 crystallizes in monoclinic C-centred space group C2/m, the Zn(1) center is octahedrally coordinated; and simultaneously bridged by EO-azido, NN'-pydz, and O,O'-sulphato ligands. The ZnN4O2-octahedra form a ID anionic chain along b-axis. The Na(OH2)(6)-octahedra have also common water molecules, thus also forming a 1D chain along b-axis. The cationic and anionic chains are connected via hydrogen bonds of type O-H...O including lattice water molecules to form a supramolecular 3D network structure. In complex 2, the Cd(1) is six-coordinated by two EE-bridging azide groups, and two nitrogen atoms of bridging NN', 3-ampy ligand, and two bridging chloro ligands. The three different bridging ligands connect the distorted octahedra of the Cd(II) centres to form a 3D network structure with the topology of a square pyramidal net (4(3) (.) 6(6)-sqp). The centrosymmetric Cd2Cl2-rings are planar and the NH2- of the 3-ampy groups forms additional hydrogen bonds of type N-H...N to the adjacent azido groups. In complex 3, the octahedrally coordinated Cd(1) centres are occupied by alternating monodentate DENA ligand and a water molecule and the other four sites are occupied by four bridging chloro ligands. Thus the Cd2Cl2-rings form common edges to form 1D chains of Cd(II) octahedra along the b-axis of the monoclinic unit cell. 2D supramolecular sheets extended along the bc-planes of the unit cell are formed by the 0-H...O hydrogen bond. The IR spectra of the three complexes were measured and they confirm the X-ray structural data. (C) 2007 Elsevier Ltd. All rights reserved.
机译：三种聚合物配合物[Zn（pydz）（N-3）（SO4）] [n] [Na（H2O）（4）] [n]（H2O）（4n）（1），[Cd（3-ampy）（ N-3）Cl]（n）（2）和[Cd（DENA）Cl-2（H2O）]（n）（3），（pydz =哒嗪或1,2-二嗪，3-ampy = 3-氨基吡啶（DENA = NN-二乙基烟酰胺）已通过光谱和结构方法进行了合成和表征，并对其网络拓扑进行了分析。配合物1在单斜C中心空间群C2 / m中结晶，Zn（1）中心是八面体配位的;并同时由EO-叠氮基，NN'-pydz和O，O'-磺基配体桥接。 ZnN4O2-八面体沿着b轴形成一条ID阴离子链。 Na（OH2）（6）-八面体也具有常见的水分子，因此也沿b轴形成一维链。阳离子链和阴离子链通过O-H ... O型氢键（包括晶格水分子）连接，形成超分子3D网络结构。在配合物2中，Cd（1）与两个EE桥叠氮化物基团和两个NN'桥基，3-ampy配体和两个桥式氯配体的氮原子配位。三种不同的桥接配体连接Cd（II）中心的扭曲八面体，以形成具有方形金字塔网状拓扑（4（3）（。）6（6）-sqp）的3D网络结构。中心对称的Cd2Cl2-环是平面的，3-ampy基团的NH2-与相邻的叠氮基团形成另外的N-H ... N型氢键。在复合物3中，八面体配位的Cd（1）中心被交替的单齿DENA配体和水分子占据，其他四个位点被四个桥连的氯配体占据。因此，Cd2Cl2-环形成共同的边缘，以沿单斜晶胞的b轴形成Cd（II）八面体的一维链。沿着晶胞的bc平面延伸的2D超分子片是由0-H ... O氢键形成的。测量了三种配合物的红外光谱，证实了其X射线结构数据。 （C）2007 Elsevier Ltd.保留所有权利。

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