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ms-四咪唑基卟啉络合金属离子的能力及其金属络合物的催化性能 总被引:1,自引:0,他引:1
本文考察了两种ms-四咪唑基卟啉〔H2T(2-I)P和H2T(4或5-I)P〕对锌离子的络合能力,并与ms-四苯基卟啉〔H2TPP〕进行了比较。用ms-四咪唑基金属卟啉〔MT(2-I)P和MT(4或5-I)P〕作为催化剂,以分子氧为氧源,考察了对氢醌、异丙硫醇和抗环血酸三种底物氧化反应的催化活性。在后一底物的氧化反应中对CoT(2-I)P,CoT(4或5-I)P和CoTPP进行了对比。此外,还用EHMO程序计算了卟吩、ms-四咪唑基卟啉、ms-四苯基卟啉及其锌络合物的净电荷分布和能量,对反应结果作了比较满意的解释。 相似文献
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本文研究了在1∶1丙酮-水混合溶剂中,回流条件下,cis-[Pt(diphos)Cl_2]与NaCNS之间的取代反应,第一次合成了CNS-的混合键合异构体的depe铂配合物cis-[Pt(depe)(NCS)(SCN)],进行了分子结构测定,属单斜晶系,空间群为P2_(1/n),晶胞参数:a=7.296(5),b=14.434(4),c=18.042(4) ,β=95.72(8)°,V=1890.7 ~3,Z=4,R_F=0.0564.在相同条件下用dPr~ipe作了对照实验,得到的是cis-[Pt(dPr~ipe)(NCS)_2],属单斜晶系,空间群为Cc,晶胞参数:a=12.279(6),b=9.330(8),c=20.102(7) ,β=108.90(9)°,V=2179.0(3) ~3,Z=4,R_F=0.0419。此外,还从双膦烷基的空间效应和电子效应讨论了对取代反应产物的影响。 相似文献
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In this paper, a novel and ideal synthetic method of the phosphorus and sulfur hybrid atom ligand is reported. The speciality of this method is that the by-products of some reactions could be used circularly as starting materials in the synthetic route. Further, we synthesized a series of organopalladium complexes containing these hybrid atom chelate ligands, among them the molecular structures of novelorganopalladium complexes Pd((i-Pr)_2-P(CH_2)_2SEt)Cl_2, Pd(Et_2P(CH_2)_2SEt)Cl_2 and Pd(Ph_2P(CH_2)_2SEt)Cl_2 were determined by using the X-ray single crystal diffraction method. We first used the organotransition metal complexes containing phosphorus and sulfur hybrid atom ligands to activate the σ-C—H bond, and researched the catalytic activity, i.e. the photochemical carbonylation of benzene was catalyzed by these palladium complexes. 相似文献
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