Table 6.
Complexes | ν(Mo≡E) | ν(Mo-S)dithiolene | ν(C=C)sym | ν(C=O)sym |
---|---|---|---|---|
MoOLCOOMe | 903 | 364 | 1530 | 1691 |
MoSLCOOMe | 493 | 364 | 1527 | 1702 |
MoSeLCOOMe | 370a | 344 a | 1525 | 1700 |
vibrational frequency calculations indicate is significant degree of mixing between ν(Mo≡Se) and ν(Mo-S)ditholene resulting from the small energy difference between these two totally symmetric vibrations.