Coordination chemistry of organometallic polydentate ligand Reactive chemistry of the tridentate lig

• 作 者: 徐凤波 孙丽娟 玄镇爱 张卫东 程晖 张正之
• 机 构: Elemento-Organic Chemistry Laboratory,Nankai University, Tianjin 300071,China,Elemento-Organic Chemi
• 出 处: Chinese Journal of Chemistry
• 发表日期: 2000年05期
• 关键词: diphenyl refined bidentate complexes neutral bonds carbonyl precipitate removed

Reaction of a new type of bidentate ligand PhPQu [ PhPQu = 2-diphenylphosphino-4-methylquinoline] with Fe(CO)5 in bu-tanol gave trans-Fe(PhPQu-P)(CO)3 (1).Compound 1,which can act as a neutral tridentate organometallic ligand,was reacted with I B,II B metal compounds and a rhodium complex to give six binuclear complexes with Fe-M bonds,Fe(CO)3(u-Ph2PQu)MXn(2-7) [M=Zn(Ⅰ),Cd(Ⅱ),Hg(Ⅱ),Cu(Ⅰ),Ag(Ⅰ),Rh(Ⅰ)],and an ion-pair complex [Fe(CO)3(n-Ph2PQu)2HgI][HgI3]- (8).The structure of 8 was determined by X-ray crystallography.Complex 8 crystallizes in the space group P-1 with a=1.0758(3),b= 1.6210(4),c = 1.7155(4) nm; a = 75.60(2)β=71.81(2),Y = 81.78(2) and Z = 2 and its structure was refined to give agreement factors of R =0.050 and Rw = 0.057.The Fe-Hg bond distance is 0.2536 nm.

Reaction of a new type of bidentate ligand PhPQu [PhPQu = 2-diphenylphosphino-4-methylquinoline] with Fe (CO) 5 in bu- which can act as a neutral tridentate organometallic ligand, was mixed with IB, II B metal compounds and a rhodium complex to give six binuclear complexes with Fe-M bonds, Fe (CO) 3 (u-Ph2PQu) MXn (2-7) [M = Zn (Ⅰ), Cd (Ⅱ), Hg (Ⅱ), Cu (Ⅰ), Ag (Ⅰ), Rh (Ⅰ)] and an ion-pair complex [Fe (CO) 3 ) 2HgI] [HgI3] - (8). The structure of 8 was determined by X-ray crystallography. Complex 8 crystallizes in the space group P-1 with a = 1.0758 (3), b = 1.6210 (4), c = A = 75.60 (2) β = 71.81 (2), Y = 81.78 (2) and Z = 2 and its structure was refined to give agreement factors of R = 0.050 and Rw = 0.057. The Fe- Hg bond distance is 0.2536 nm.