作者:U. Kunze、A. Bruns、D. Rehder
DOI:10.1016/0022-328x(84)80256-9
日期:1984.6
A series of halotricarbonylmanganese chelate complexes, fac-(CO)3Mn(X)L (X = Cl (a), Br (b), I (c)), with thioformamide (L = Ph2PC(S)NRMe; R = H (1), Me (2), Ph (3)) and the isomeric thioformimidoester (L = Ph2PC(NR)SMe; R = Me (4), Ph (5)) ligands were prepared by thermal CO substitution of the pentacarbonylmanganese halides. The IR and NMR data indicate P,S-coordination of the ambidentate ligands
一系列卤代三羰基锰螯合物,fac-(CO)3 Mn(X)L(X = Cl(a),Br(b),I(c))与硫代甲酰胺(L = Ph 2 PC(S)NRMe; R = H(1),Me(2),Ph(3))和同分异构的硫代甲酰亚氨基酯(L = Ph 2 PC(NR)SMe; R = Me(4),Ph(5))配体是通过热CO制备的五羰基锰卤化物的取代。红外和核磁共振数据表明,在3–5中,歧义配体的P,S配位和均匀的Z构型。由于NMR信号的线宽较大,因此无法确定1-3硫代酰胺配合物的4 J(PH)和3 J(PC)耦合常数。硫酰亚胺4的配位导致4 J(PH)的增加,而3 J(PC)保持不变。δ(31 P)显示了锰配合物的低场配位平移。酰亚胺酯配合物4和5的55 Mn宽泛NMR信号覆盖+90至-730 ppm(相对于KMnO 4)的范围在低场一侧。对于55 Mn屏蔽,观察到正常的卤素依赖性Cl