RHODIUM COMPLEXES CONTAINING 1-(4-PYRIDYLMETHYLENE)-4-ALKOXYANILINES AS LIGANDS - CRYSTAL-STRUCTURE OF AN UNUSUAL SQUARE-PLANAR CLUSTER OF 64 ELECTRONS, RH4(OOCCH3)4(CO)4(NC5H4CH=NC6H4OC14H29)4

被引:37
作者
LAHOZ, FJ [1 ]
MARTIN, A [1 ]
ESTERUELAS, MA [1 ]
SOLA, E [1 ]
SERRANO, JL [1 ]
ORO, LA [1 ]
机构
[1] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,DEPT QUIM INORGAN,E-50009 ZARAGOZA,SPAIN
关键词
D O I
10.1021/om00052a027
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Rh(OCOCR3)(cod)L(n) (1-6) and cis-Rh(OCOCR3)(CO)2L(n) (7-12) (R = H, F; cod = 1,5-cycloctadiene; L(n) = NC5H4CH = NC6H4OC(n)H2n+1 with n = 2, 8, 14) complexes have been prepared by the reaction of the L(n) ligands with the corresponding dimers [Rh(OOCCR3)(cod)]2 or [Rh(OOCCR3)(CO)2]2 (R = H, F). The cis-dicarbonyl compounds 7-12 decompose in dichloromethane solution to form square-planar clusters of 64 electrons, Rh4(OOCCH3)4(CO)4L4n (13-18). The molecular structure of Rh4(OOCCH3)4(CO)4L4(14) (15) has been determined by X-ray investigation. The complex is centrosymmetric, and the four rhodium atoms define a rectangle. Two alternant metal-metal bonds of the rectangle are bridged by two carbonyl groups; the other two remaining Rh-Rh bonds are bridged by two acetate groups. Each metal completes its coordination sphere with the pyridinic ligand NC5H4CH = NC6H4OC14H29. Crystal data for 15: space group P1BAR, a = 10.300 (1) angstrom, b = 11.166 (1) angstrom, c = 26.216 (3) angstrom, alpha = 89.29 (1)degrees, beta = 88.68 (1)degrees, gamma = 72.17 (1)degrees; 4491 reflections, R = 0.041, R(w) = 0.041. The complexes [Rh4(OOCCH3)4(CO)4(py)4] (19, 20; R = H, F; py = pyridine) are also reported.
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页码:1794 / 1799
页数:6
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