摘要
以水杨醛缩对甲苯胺(HL)为配体合成了单核水杨醛缩对甲苯胺钴(Ⅲ)配合物CoL2Cl。通过X-射线单晶衍射、荧光光谱进行了表征。该配合物晶体属单斜晶系,P21/n空间群,晶胞参数:a=0.862 8(6)nm,b=0.180 35(11)nm,c=0.164 30(11)nm,α=γ=90°,β=103.593(13)°,V=2.485(3)nm3,Z=4,Dc=1.376 Mg/m3,F(000)=1 064,μ=0.826mm-1,并得到了CoL2Cl的原子坐标、等效温度因子、键长、键角和扭转角等数据。根据测试数据,分析了CoL2Cl的结构特点和合成机理。钴离子位于变形四面体的中心,分别与2个席夫碱、1个N原子和2个氧原子、1个Cl-形成配位键。配合物分子通过π-π堆积构成了三维网状结构。荧光光谱表明,配合物金属离子对配体π-π*跃迁引起的荧光发射峰有较大的影响。
Mononuclear complex CoL2Cl with N-salicylidene-p-methylaniline（HL） as ligand was synthesized and characterized by single crystal X-ray diffraction analysis and fluorescence spectrum.The crystal is monoclinic with space group P21/n and crystal parameters of a=0.862 8（6）nm,b=0.180 35（11）nm,c=0.164 30（11）nm,α=γ=90°,β=103.593（13）°,V=2.485（3）nm3,Z=4,Dc=1.376 Mg·m-3,F（000）=1 064,μ=0.826 mm-1.The information is also provided about atomic coordinates,equivalent isotropic displacement parameters,bond lengths,bond angles and torsion angles of CoL2Cl.On the basis of tested parameters,the structure characteristics and synthesized mechanism of CoL2Cl were obtained.Cobalt（Ⅲ） atom lies at the center of a distorted tetrahedral coordination consisting of one N atoms and two O atoms from two L-ligands,one Cl-.There exists one kind of face to face π-π stacking interactions.The fluorescence spectrum of the complex suggests the π-π fluorescence mechanism.The emission lines are shifted to lowerer frequencies.
出处
《化学试剂》
CAS
CSCD
北大核心
2010年第10期877-880,902,共5页
Chemical Reagents
基金
延安大学科研基金资助项目(Y02005044)
陕西省教育厅专项科研计划项目(09JK815)
关键词
钴(Ⅱ)配合物
晶体结构
合成
荧光性质
cobalt（Ⅲ） complex
crystal structure
synthesis
fluorescence character
