Syntheses and Crystal Structures of Cobalt(II) and Nickel(II) Coordination Polymers with 3-Aminobenzoic Acid Ligand

1 INTRODUCTION Much research interest has been focused on metal- organic coordination polymers in past years because of the structural and topological novelty of these compounds and their potential applications as func- tional materials, such as catalyst, ion-exchange, gas sorption, optical material and molecule-based ma- gnet[1~6]. In this field, many organic bridging ligands such as bipyridine, polyaromatic carboxylate and re- lated species have been used to produce various types of met…     

Syntheses and Crystal Structures of Ternary Complexes of Zinc（Ⅱ） and Cadmium（Ⅱ） with 3-Aminobenzoic Acid and 1,10-Phenanthroline

1 INTRODUCTION Benzoic acids with substituent of amino are a class of rigid ligands possessing several functional groups. When they coordinate to metal ions, versa- tile coordination modes will be presented with pre- sence of not only coordinate-covalent bonds but also hydrogen bonds. Besides, diverse coordination modes of carboxyl and rigid frame of benzene ring gua- rantee the stability of multi-dimensional structures of the synthesized metal complexes. Thus ligands of this class are o…     

超分子化合物[M(4，4′-bipy)2(H2O)4·(4，4′-bipy)2·(3，5-diaba)2·8H2O](M=Co，Ni，Cd)的合成及晶体结构

合成了3个超分子化合物[M(4，4′-bipy)₂(H₂O)₄]·(4，4′-bipy)₂·(3，5-diaba)₂·8H₂O(M=Co (1)，Ni (2)，Cd (3)；4，4′-bipy=4，4′-联吡啶；3，5-diaba=3，5-二氨基苯甲酸阴离子)，用红外光谱、元素分析及X-射线单晶衍射进行了表征。3个化合物的晶体都属于单斜晶系，空间群为P2/c。晶体学参数：化合物1：a=0.938 9(2) nm，b=0.775 1(1) nm，c=3.928 4(6) nm，β=90.14(2)°，V= 2.858 80(69) nm³，Z=4，D_c=1.397 g·cm^-3，F(000)=1 266，μ=0.380 mm^-1，R₁=0.034 9,wR₂=0.082 9;化合物2:a=0.938 3(2) nm,b=0.775 3(1) nm，c= 3.921 8(6) nm，β=90.09(1)°，V=2.852 80(68) nm³，Z=2，D_c=1.399 g·cm^-3，F(000)=1 268，μ=0.420 mm^-1，R₁=0.036 6，wR₂=0.080 5；化合物3：a=0.940 91(13) nm，b=0.778 85(11) nm，c=3.971 2(5) nm，β=90.10°，V=2.910 2(7) nm³，Z=2，D_c=1.433 g·cm^-3，F(000)=1 308，μ=0.454 mm^-1，R₁=0.046 8，wR₂=0.096 4。3，5-diaba未参与配位，在配位阳离子[M(4，4′-bipy)₂(H₂O)₄]²⁺中，金属离子M(II)与来自2个4，4′-bipy的2个氮原子和4个水分子的氧原子配位，呈八面体的几何构型。分子中还存在未配位的4，4′-bipy。通过配位阳离子、游离4，4′-bipy及未配位的3，5-diaba间的丰富氢键，构建成具有三维结构的超分子化合物。