Kinetische Untersuchungen über Substitutionsreaktionen an Metallkomplexen. 9. Mitteilung [1]. Kinetik und Mechanismus der Reaktion von Hexamethylborazolchrom-tricarbonyl mit tertiären Phosphinen und Phosphiten [2]
作者： E. Deckelmann , H. Werner
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摘要: Hexamethylborazolechromium tricarbonyl B3N3(CH3)6 Cr(CO)3 reacts with tertiary phosphines and phosphites under surprisingly mild conditions by cleavage of the ring-to-metal bond. For L = trialkylphosphines trialkyl- or triaryl-phosphites, compounds general composition cis-Cr(CO)3L3 are formed, whereas for triphenyl- tricyclohexyl-phosphine complexes trans-Cr(CO)4L2 obtained. The kinetics reaction P(OR)3 (R CH3, C2H5, C6H5) have been studied means spectrophotometric methods. The second-order rate law indicates a primary, rate-determining attack phosphite to either metal atom ring ligand borazole complex. This is favoured an extremely low activation energy. mechanism substitution process discussed in detail, reactivity hexamethylborazole compound compared that other half-sandwich type complexes.
sci-hub.se 参考文章(18)
Franco Zingales, Angiola Chiesa, Fred Basolo, Kinetics and Mechanism of Substitution Reactions of Arene Molybdenum Tricarbonyl Journal of the American Chemical Society. ,vol. 88, pp. 2707- 2710 ,(1966) , 10.1021/JA00964A016
A. Pidcock, J. D. Smith, B. W. Taylor, Ligand displacement reactions. Part I. Kinetics of the reaction between trimethyl phosphite and some tricarbonyl(arene)molybdenum complexes Journal of the Chemical Society A: Inorganic, Physical, Theoretical. pp. 872- 876 ,(1967) , 10.1039/J19670000872
W. Strohmeier, Photochemical Substitutions on Metal Carbonyls and Their Derivatives Angewandte Chemie International Edition in English. ,vol. 3, pp. 730- 737 ,(1964) , 10.1002/ANIE.196407301
W. Strohmeier, Photochemische Substitutionen an Metallcarbonylen und deren Derivaten Angewandte Chemie. ,vol. 76, pp. 873- 881 ,(1964) , 10.1002/ANGE.19640762103
David A Brown, Substitution reactions of metal, carbonyl compounds Inorganica Chimica Acta Reviews. ,vol. 1, pp. 35- 47 ,(1967) , 10.1016/0073-8085(67)80018-4
R. B. King, Complexes of Trivalent Phosphorus Derivatives. II. Metal Carbonyl Complexes of Tris(dimethylamino)-phosphine Inorganic Chemistry. ,vol. 2, pp. 936- 944 ,(1963) , 10.1021/IC50009A014
H. Werner, Kinetic Studies on Substitution Reactions of Carbonylmetal Complexes Angewandte Chemie. ,vol. 7, pp. 930- 941 ,(1968) , 10.1002/ANIE.196809301
A. Pidcock, B. W. Taylor, Ligand displacement reactions. Part II. Kinetics of the reaction between trimethyl phosphite and the tricarbonyl(cycloheptatriene) complexes of chromium, molybdenum, and tungsten Journal of the Chemical Society A: Inorganic, Physical, Theoretical. pp. 877- 879 ,(1967) , 10.1039/J19670000877
H. Werner, E. Deckelmann, Ein Zweikernkomplex des Chroms mit Dioxan als Brückenliganden Angewandte Chemie. ,vol. 80, pp. 564- 565 ,(1968) , 10.1002/ANGE.19680801413
Robert Bruce King, K. H. Pannell, Complexes of trivalent phosphorus derivatives. III. Metal carbonyl complexes of 9-phenyl-9-phosphabicyclo[4.2.1]-nonatriene Inorganic Chemistry. ,vol. 7, pp. 273- 277 ,(1968) , 10.1021/IC50060A021