Carbonylhydridonitrosyltris(trimethylphosphine)molybdenum(0): An Activated Hydride Complex

Carbonylhydridonitrosyltris(trimethylphosphine)molybdenum(0): An Activated Hydride Complex
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羰基氢化亚硝基三(三甲基膦)钼(0):一种活化的氢化物络合物

DOI:
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发表时间:
2000
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影响因子:
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通讯作者:
H. Berke
H. Berke
中科院分区:
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文献类型:
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作者:
F. Liang;H. Jacobsen;H. Schmalle;A. T. Fox;H. Berke

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以Mo(CO)4(NO)AlCl 4为原料,经可分离的中间体MoCl(CO)(NO)(PMe 3)3(1)和硼氢化物Mo(η1-BH 4)(CO)(NO)(PMe 3)3(2)合成了钼(CO)H(NO)(PMe 3)3配合物3。已探测了3相对于插入的反应性。因此,3与苯甲醛、二苯甲酮、苯乙酮和丙酮反应,得到相应的醇盐络合物Mo(CO)(NO)(PMe 3)3(OCHR 'R“)(R”= H,R“= Ph(4a); R”,R“= Ph(4 b); R”= Me,R“= Ph(4c),和R”,R“= Me(4d))。3进行羰基插入的高倾向性也表现在其与CO2和金属羰基化合物的转化中。3与CO2的转化导致甲酸根-O-络合物Mo(CO)(NO)(PMe 3)3(OCHO)(5),而CO诱导PMe 3取代,形成不可分离的Mo(CO)2(NO)(PMe 3)2 H化合物(6)。Fe(CO)5很容易插入生成双核甲酰基物种(Me_3P)_3(ON)(OC)Mo(μ-OCH)Fe(CO)_4(7a),而Re_2(CO)_10则转化为相关的μ-甲酰基络合物(Me_3P)_3(7a)。
The synthesis of the mer-Mo(CO)H(NO)(PMe3)3 complex 3 is described, which is obtained from Mo(CO)4(NO)AlCl4 via the isolable intermediates MoCl(CO)(NO)(PMe3)3 (1) and the borohydride complex Mo(η1-BH4)(CO)(NO)(PMe3)3 (2). The reactivity of 3 with respect to insertions has been probed. 3 thus reacts with benzaldehyde, benzophenone, acetophenone, and acetone to afford the corresponding alkoxide complexes Mo(CO)(NO)(PMe3)3(OCHR‘R‘‘) (R‘ = H, R‘‘ = Ph (4a); R‘, R‘‘ = Ph (4b); R‘ = Me, R‘‘ = Ph (4c), and R‘, R‘‘ = Me (4d)). A high propensity of 3 to undergo carbonyl insertion was also manifested in its transformations with CO2 and metal carbonyl compounds. The conversion of 3 with CO2 leads to the formato-O-complex Mo(CO)(NO)(PMe3)3(OCHO) (5), while CO induces PMe3 substitution with formation of the nonisolable Mo(CO)2(NO)(PMe3)2H compound (6). Fe(CO)5 readily inserts to yield the dinuclear formyl species (Me3P)3(ON)(OC)Mo(μ-OCH)Fe(CO)4 (7a), and Re2(CO)10 is transformed to the related μ-formyl complex (Me3P)3...