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The title complex, [(ArO)2Sm(OPPh3)(m-OH)]2 (ArO = 2,6-tBu2-4-Me-C6H2O), was obtained by the hydrolysis reaction of divalent samarium aryloxide, Sm(ArO)2(THF)4, in the presence of triphenylphosphine oxide (OPPh3) in toluene. Crystal data: C96H124O8P2Sm2, Mr = 1768.77, monoclinic, space group P21/n, a = 15.276(6), b = 19.406(9), c = 19.320(7) ? b = 108.59(2), V = 5428(3) 3, Z = 2, Dc = 1.081 g/cm3, F(000) = 1836, T = 293 K, l(MoKa) = 0.71069 ?and m = 11.47 cm-1. The final R = 0.072 and wR = 0.092 for 2456 observed reflections with I ≥ 3s(I). The molecule has a dimeric structure with two centrosymmetric hydroxyl bridges. The samarium atom is coordinated by five oxygen atoms to form a distorted square-pyramid geometry with the average SmO(Ar) distance of 2.18 ?
The title complex was obtained from the hydrolysis reaction of divalent samarium aryloxide, Sm (ArO) 2 (ArO = 2,6-tBu2-4-Me-C6H2O) 2 (THF) 4 in the presence of triphenylphosphine oxide (OPPh3) in toluene. Crystal data: C96H124O8P2Sm2, Mr = 1768.77, monoclinic, space group P21 / n, a = 15.276 (6), b = 19.406 = 19.320 (7)? B = 108.59 (2) V = 5428 (3) 3 Z = 2 Dc = 1.081 g / cm3 F000 = 1836 T = 293 K l MoKa = 0.71069 The final R = 0.072 and wR = 0.092 for 2456 observed reflections with I ≥ 3s (I). The molecule has a dimeric structure with two centrosymmetric hydroxyl bridges. The samarium atom is coordinated by five oxygen atoms to form a distorted square-pyramid geometry with the average SmO (Ar) distance of 2.18?