The Mo atom in the title compound, [MO(CO)(4)(C12H27O3P)(2)], lies on
an inversion centre and has slightly distorted octahedral geometry, wi
th principal dimensions Mo-P 2.4699 (7), Mo-C 2.027 (4), 2.031 (3) Ang
strom, P-Mo-P 180, cis-C-Mo-C 88.7 (2), C-Mo-P 86.12 (10) and 87.27 (9
)degrees. The geometry about the P atom is distorted from tetrahedral,
with Mo-P-O angles in the range 108.04 (9)-126.03 (10)degrees and red
uced O-P-O angles in the range 96.71 (13)-106.09 (14)degrees. The aver
age cone angle for the tert-butyl phosphite ligand is 156 degrees.