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The lsolobal displacement reaction between the dianion {M(CO)3[(h5-C5H4) C(O)C6H4C(O)(h5-C5H4)](CO)3M}2- and two molecules of [(m3-C)CO2Et]Co3(CO)9 gave rise to the formation of terephthaloyl(biscyclopentadienyl)-bridged double cluster complexes [(h5-C5H4)C(O)C6H4C(O)(h5-C5H4)]{[(m3-C)CO2Et]Co2M(CO)8}2 (M = Mo 1, M = W, 2). In the reaction, single cluster complexes[(m3-C)CO2Et]-Co2M(CO)8[h5-C5H4C(O)C6H4CO2CH3] ( M = Mo 3, M = W, 4) were yielded as by-products. All the cluster complexes were characterized by C/H analysis, IR and 1H NMR spectroscopy, and the structure of 3 has been determined by single-crystal X-ray diffraction method. Crystal data: Mr = 750.19, monoclinic, space group P21/c, a = 22.652(5), b = 8.954 (2), c = 14.530(3) ? b = 104.00(3), V = 2859.6(10) 懦, Z = 4, Dc = 1.743 mg/m? F(000) = 1488, m = 1.644 mm-1, the final R = 0.0555 and wR = 0.1353 for 5519 observations with I > 2s(I).
The lsolobal displacement reaction between the dianion {M (CO) 3 [(h5-C5H4) C (O) C6H4C (O) (h5-C5H4)] (CO) 3M} 2- and two molecules of [(m3-C) CO2Et] Co3 (CO) 9 gave rise to the formation of terephthaloyl (biscyclopentadienyl) -bridged double cluster complexes [(h5-C5H4) C (O) C6H4C (O) (h5-C5H4) ] Co2M (CO) 8} 2 (M = Mo1, M = W, 2) In the reaction, single cluster complexes [(m3-C) CO2Et] -Co2M (CO) 8 [h5-C5H4C (O) C6H4CO2CH3 All the cluster compounds were characterized by C / H analysis, IR and 1H NMR spectroscopy, and the structure of 3 has been determined by single-crystal (M = Mo 3, M = W, 4) A = 22.652 (5), b = 8.954 (2), c = 14.530 (3)? B = 104.00 (3), V = 2859.6 (10) Coward, Z = 4, Dc = 1.743 mg / m F (000) = 1488, m = 1.644 mm-1, the final R = 0.0555 and wR = 0.1353 for 5519 observations with I> ).