The Effect of the chiral ligand on the stereoselectivity in the diastereoisomer of the metal complex

研究了金属配合物的立体选择性：(1)新制备了具有手性席夫碱配体的铜（II）和钴（III）配合物的非对映异构体，并测定了它们的晶体结构。所研究的手性席夫碱是1-苯基乙胺（phenea）、仲丁胺（butyl）和仲庚胺（heptyl）基团。在每个化合物上证实了立体选择性非对映异构体的形成。(2)新制备了具有手性单齿伯胺和几种环咪唑配体的铜（II）和钯（II）配合物的非对映异构体，并测定了它们的晶体结构。所研究的手性胺配体是1-苯基乙胺（phenea）和仲丁胺（butyl）。在每个化合物上证实了立体选择性非对映异构体的形成，并发现了几个交错旋转体的phenea配体。(3)新制备了具有螺旋手性的配合物，并测定了其晶体结构。在这些体系中发现了立体选择性的C-C键形成。此外，还制备了具有二茂铁基团的螺旋三核金属配合物，并分别为钯（II）和铂（II）发现了新的金属-硫四核簇。从这些研究中，新发现并证实了几种金属配合物的非对映选择性。

The stereoselectivity of metal complexes has been studied:(1) The diastereoisomers of the copper(II) and cobalt(III) complexes having the chiral Schiff-base ligand have been newly prepared and their crystal structures have been determined. The chiral Schiff-bases studied are 1-phenylethylamine(phenea), secondary-butylamine (butyl), and secondary-heptylamine(heptyl) groups. The stereoselective diastereoisomer formations were confirmed on each compound.(2) The diastereoisomers of the copper(II) and palladium(II) complexes having the chiral monodentate primary-amine and several cyclic imidato ligands have been newly prepared and their crystal structures have been determined. The chiral amine ligands studied are 1-phenylethylamine (phenea) and secondary-butylamine(butyl). The stereoselective diastereoisomer formations were confirmed on each compound and several staggered rotamers of the phenea ligand have been found.(3) The complexes having helical chirality were newly prepared and their crystal structures were determined. The stereoselective C-C bond formations in these systems were found. Helical trinuclear metal complexes having the ferrocene group were also prepared and, moreover, the novel metal-sulfur tetranuclear clusters were found for the metal=palladium(II) and platinum(II), respectively. From these studies, several types of the diastereoselectivity on the metal complexes were newly found and were confirmed.