Hydricities of BzNADH, C<sub>5</sub>H<sub>5</sub>Mo(PMe<sub>3</sub>)(CO)<sub>2</sub>H, and\nC<sub>5</sub>Me<sub>5</sub>Mo(PMe<sub>3</sub>)(CO)<sub>2</sub>H in Acetonitrile
William W. Ellis (2722906)James W. Raebiger (2377276)Calvin J. Curtis (2290444)Joseph W. Bruno (2722909)Daniel L. DuBois (1364721)
Abstract
The thermodynamic hydride donor abilities of 1-benzyl-1,4-dihydronicotinamide (BzNADH, 59\n± 2 kcal/mol), C<sub>5</sub>H<sub>5</sub>Mo(PMe<sub>3</sub>)(CO)<sub>2</sub>H (55 ± 3 kcal/mol), and C<sub>5</sub>Me<sub>5</sub>Mo(PMe<sub>3</sub>)(CO)<sub>2</sub>H (58 ± 2 kcal/mol)\nhave been measured in acetonitrile by calorimetric and/or equilibrium methods. The hydride donor abilities\nof BzNADH and C<sub>5</sub>H<sub>5</sub>Mo(PMe<sub>3</sub>)(CO)<sub>2</sub>H differ by 13 and 24 kcal/mol, respectively, from those reported\npreviously for these compounds in acetonitrile. These results require significant revisions of the hydricities\nreported for related NADH analogues and metal hydrides. These compounds are moderate hydride donors\nas compared to previously determined compounds.
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