Synthesis,reactivity and x-ray crystal structures of mixed thiazolato- or carboxylato- carbonyl(phosphine) rhenium(I) complexes |
| |
| Authors: | Roberto Rossi Adriano Duatti Luciano Magon A Marchi Alessandro Medici Marco Fogagnolo Umberto Casellato Rodolfo Graziani |
| |
| Institution: | (1) Laboratorio di Chimica Inorganica, Istituto Chimico, Università di Ferrara, Italy;(2) Laboratorio Di Chimica Organica, Istituto Chimico, Università di Ferrara, Italy;(3) Istituto di Chimica e Tecnologia dei Radioelementi del C.N.R., Padova, Italy;(4) Dipartimento di Chimica Inorganica, Metallorganica e Analitica, Università di Padova, Italy |
| |
| Abstract: | Summary The compound Re(CO)3(PPh3)2Cl] reacts with the lithium salt of thiazole derivatives (L1H = 2-amino-benzothiazole, L2H = 2–N-methyl-aminothiazole, L3H = 2–N-phenylaminothiazole, L4H = 2–N-(4-methoxyphenyl)aminothiazole, L5H = 2–N(4-nitrophenyl)aminothiazole) to give Re(CO)2-(PPh3)2(L)]. The compounds have been characterized by elemental analysis, i.r. and1H n.m.r. spectra. At room temperature Re(CO)2(PPh3)(L2)] reacts with L6H (L6H = diphenylacetic acid), to give the carboxylato complex Re(CO)2
.The crystal structures of Re(CO)2(PPh3)2(L2)] (2) and Re(CO)2(PPh3)2(L6)] (6) were determined by x-ray crystallography. Re(CO)2(PPh3)2(L2)] crystallizes in the monoclinic space group P21/m witha = 9.16(1),b= 24.82(2),c =9.12(1) Å, and  = 115.81(4)°; Dc = 1.56 g cm–3for Z = 2.The structure was refined to a final R of 6.4%. The molecules have Cs symmetry. The rhenium atom is six-coordinate with approximately octahedral geometry. The anionic ligand is chelating through the nitrogen atoms and is strictly planar allowing delocalization of the  -electron density. Re(CO)2(PPh3)2(L6)] (6) crystallizes in the monoclinic space group P21/n witha = 22.203(5),b = 18.651(5),c =10.653(3) Å, = 91.08(3)°, Dc = 1.47 g cm–3 for Z = 4. The structure was refined to a final R of 4.7%. The complex is monomeric and the rhenium atom is distorted octahedral with two mutuallytrans PPh3 ligands, twocis CO ligands and one chelating Ph2CHCO
2
–
ion. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
