108451-97-4Relevant academic research and scientific papers
Copper(II)Acetate as a Building Block of Heterometallic Dinuclear Complexes with a Cu-Mo and Cu-W Bond. The X-ray Crystal Structures of C5H5(CO)2Mo(μ-O2CMe)2Cu(4-MeC5H4N) and C5H5W(CO)3OC(O)Me
Werner, Helmut,Roll, Joachim,Zolk, Ralf,Thometzek, Peter,Linse, Klaus,Ziegler, Manfred L.
, p. 1553 - 1564 (2007/10/02)
The reactions of the dimeric copper(II) acetate adducts L2Cu2(μ-O2CMe)4 (3a-c) with Na (M = Mo, W) lead to the formation of the heterometallic dinuclear complexes C5H5(CO)2M(μ-O2CMe)2Cu(L) (4a-c, 7a, b).For M = W, the mononuclear compound C5H5W(CO)3OC(O)Me (8) has been isolated as a minor product.The X-ray structural analysis of 4b (M = Mo, L = 4-methylpyridine) reveals that the two metal atoms are linked by a direct Cu-Mo bond and are also bridged by two acetate units.On the same route as 4b, the dinuclear complexes C5H5(CO)2Mo(μ-O2CCF3)2Cu(4-MeC5H4N) (5), C5Me5(CO)2Mo(μ-O2CMe)2Cu(4-MeC5H4N) (6), and C5H5(CO)2W(μ-O2CCF3)2Cu(4-MeC5H4N) (9) have been obtained.Compound 8 which owing to the X-ray analysis has a four-legged-piano-stool structure is accessible almost quantitatively on reaction of C5H5W(CO)3CH3 (11) with CH3CO2H/HBF4 followed by deprotonation of the isolated intermediate BF4 (12) with K2CO3.Starting with C5H5Mo(CO)3CH3 (13) and CH3CO2H/HBF4, the molybdenum compound BF4 (14) and from this and K2CO3 a mixture of C5H5Mo(CO)3OC(O)Me (15) and C5H5Mo(CO)2(η2-O2CMe) (16) are prepared.That 8 and 15 are intermediates in the formation of the dinuclear (Cu-Mo) and (Cu-W) complexes from 3 and Na has been confirmed by independent synthesis of 4b and 7b from C5H5M(CO)3OC(O)Me, MeCO2Cu and 4-methylpyridine.Similarly, the bis-μ-(benzoato) complexes C5H5(CO)2M(μ-O2CPh)2Cu(4-MeC5H4N) (20, 23) have been obtained.The reactions of 4b and 7b with PR3 (R = Ph, Me), C2Ph2 (in presence of HBF4), and thioacetic acid produce the compounds cis- (25-28), BF4 (29, 30), and C5H5Mo(CO)2(η2-OSCMe) (31).
