Light catalyzed substitution and disproportionation in [(π-C5H5)Mo(CO)3]2

Photochemistry of cyclopentadienylmolybdenum and cyclopentadienyltungsten carbonyl halide complexes

“…m-Re(CO)4(PPh3)X + CO (18) As shown in Table IV, 366-and 436-nm quantum yields for PPh3 substitution of CpM(CO)3X complexes are independent of entering ligand concentration over the range 5.0 X KTMO.O X 10~3 M, the metal complex concentration being 1.0 X 10"3 M. The quantum yields decrease markedly for solutions saturated with carbon monoxide (Table III), paralleling the observations made for PPh3 substitution of CpFe(CO)2X8 and CpV(CO)4.9 These results strongly suggest that photosubstitution of CpM(CO)3X involves dissociation of carbon monoxide and are best accounted for by eq [19][20][21][22][23].…”

Photochemistry of metal-metal bonded complexes. III. Photoreactivity of hexacarbonylbis(.eta.5-cyclopentadienyl)dimolybdenum(I) and -ditungsten(I)

“…" In 3.0 ml of degassed isooctane solutions; analysis by ir. 6 Photolysis flash at 300-400 J using Xenon Corp. flash photolysis apparatus.…”

Photochromism in the di-.pi.-cyclopentadienylhexacarbonyldimolybdenum(1+) bromide(1-) system

“…Aliquots of 4.0 ml were subjected Figure 1. Visible spectra of (1) [(7r-C5Hs)Mo(CO)3]2 (Xmax 507 nm, e 1870), (2) (w-C5H5)Mo(CO)3Br (Xmax 476 nm, e 490), and (3) (t-C5Hs)Mo(CO)2Bi2 " (Xmax 512 nm, e 250 ± 10%) in tetrahydrofuran.…”