Oxygen abstraction from tetrahydrofuran by molybdenum-iodide complexes. X-ray molecular structure of [Mo2(μ-O)(μ-I)(μ-O2CCH3)I2(THF)4][MoOI4(THF)] (THF = tetrahydrofuran) |
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Authors: | F Albert Cotton Rinaldo Poli |
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Institution: | Department of Chemistry and Laboratory for Molecular Structure and Bonding, Texas A&M University, College Station, TX 77843, U.S.A. |
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Abstract: | The interaction between Mo2(O2CCH3)4, Me3SiI and I2 in THF resulted in oxygen abstraction from the solvent and formation of Mo2(μ-O)(μ-I)(μ-O2CCH3) I2(THF)4]+MoOI4(THF)]? and I---(CH2)4---I. The molybdenum complex has been characterized by X-ray diffractometry. Crystal data: triclinic, space group P
, a = 13.827(3) Å; b = 15.803(7) Å; c = 9.950(3) Å; = 93.34(4)°; β = 102.40(2)°; γ = 90.09(2)°; V = 2120(2) Å3; Z = 2; dcalc = 2.559 g cm?3; R = 0.0476 (Rw = 0.0613) for 370 parameters and 3938 data with F02> 3σ(F02). The metal-metal distance in the cation is 2.527(2) Å and indicates a strong interaction. The magnetic behavior is consistent with the assignment of one unpaired electron to the Mo27+ core of the cation and one to the d1 Mo(V) center of the anion. The interaction between Mo(CO)6 and I2 in THF also results in the formation of 1,4-diiodobutane. |
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