Abstract
The dppp e -bridged bimetallic complex, trans-bis[μ-1,5-bis (diphenylphosphino)pentane-P:P']bis[tetracarbonylmolybdenum(0)], was prepared thermolytically from [Mo(CO) 6 ] and dppp e and identified from IR, 1 H and 31 P NMR, and elemental analysis. It has bridged 16-membered-ring structure; the trans geometry may be the result of the steric effect of the diphenylphosphino groups during the thermolytic substitution reaction. The molybdenum coordination sphere is a slightly distorted octahedron with Mo-P bonds of 2.478 (2) and 2.488 (2) A, and Mo-CO bonds ranging from 2.01 (1) to 2.030 (9) A. A crystallographic inversion centre coincides with the molecular centroid
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