摘要
合成了一对结构类似的双核铜和锌配合物,Cu_2(L^1)_2(1)和[Zn_2(L^2)_2(CH_3OH)_2](2),其中L^1和L^2分别是2-溴-N′-(2-羟基-5-甲基苯亚甲基)苯甲酰肼(H_2L^1)和2-氯-N′-(2-羟基-5-甲基苯亚甲基)苯甲酰肼(H_2L^2)的二价阴离子,通过元素分析、红外光谱以及单晶X射线衍射表征了它们的结构。配合物1以三斜晶系P1空间群结晶,其晶体学参数:a=0.914 11(6)nm,b=1.180 04(7)nm,c=1.359 36(9)nm,α=101.928(2)°,β=91.399(2)°,γ=107.873(2)°,V=1.359 3(2)nm3,Z=2,R_1=0.054 0,wR_2=0.118 9,GOF=0.970。配合物2以单斜晶系P21/c空间群结晶,其晶体学参数:a=1.216 97(9)nm,b=1.214 96(9)nm,c=1.212 83(9)nm,β=110.939(1)°,V=1.674 8(2)nm^3,Z=2,R1=0.034 1,wR_2=0.068 9,GOF=1.024。X射线分析表明2个化合物都是中心对称的双核配合物,其中配合物1中的Cu原子是平面正方形配位构型,配合物2中的Zn原子是四方锥配位构型。还通过MTT法研究了这两个配合物的抗细菌(大肠杆菌,金黄色葡萄球菌,枯草芽孢杆菌和铜绿色假单胞菌)和抗真菌(白假丝酵母菌和黑曲霉菌)活性。
A pair of structurally similar dinuclear copper(Ⅱ) and zinc(Ⅰ) complexes, Cu2(L1)2 (1) and [Znz(L2)2 (CH3OH)2] (2), where L^1 and L^2 are the dianionic form of 2-bromo-N'-(2-hydroxy-5-methylbenzylidene)benzohydrazide (HzL1) and 2-chloro-N'-(2-hydroxy-5-methylbenzylidene)benzohydrazide (H2L2), respectively, have been synthesized and characterized by elemental analysis, infrared spectra and single-crystal X-ray diffraction. Complex 1 crystallizes in the triclinic space group P1, with unit cell parameters: a=0.914 11(6) nm, b=1.180 04(7) nm, c=1.359 36(9) nm, a=101.928(2)°,β=91.399(2)°, 7=107.873(2)°, V=1.359 3(2) nm^3, Z=2, R1=0.054 0, wR2= 0.118 9, GOF=0.970. Complex 2 crystallizes as the monoclinic space group P21/c, with unit cell parameters: a= 1.216 97(9) nm, b=1.214 96(9) nm, c=1.212 83(9) nm,β=110.939(1)°, V=1.674 8(2) nm^3, Z=2, R1=0.034 1, wR2= 0.068 9, GOF=1.024. X-ray analysis indicates that the complexes are centrosymmetric dinuclear species, with the Cu atoms in 1 in square planar coordination, and with the Zn atoms in 2 in square pyramidal coordination. The complexes were evaluated for their antibacterial (B. subtilis, S. aureus, E. coli and P. aeruginosa) and antifungal (C. albicans and A. niger) activities by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) method. CCDC: 1447054, 1; 1447056, 2.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2016年第5期906-912,共7页
Chinese Journal of Inorganic Chemistry
基金
河南省教育厅基金(No.14B150036)资助项目
关键词
席夫碱
铜配合物
锌配合物
双核配合物
晶体结构
抗菌活性
Schiff base
copper complex
zinc complex
dinuclear complex
crystal structure
antimicrobial activity