η2-Nitrosyl linkage isomers in the photochemistry of Mo(CO)(NO)(DPPE)(S2CNEt2) and Mo(CO)3(NO)(DPPE)

Photolysis of Mo(CO)(NO)(DPPE)(S2CNEt2) and [Mo(CO)3(NO)(DPPE)]PF6 in frozen matrices results in the isomerization of a linear nitrosyl ligand to its side-on, η2-NO isomer. These results are discussed in the context of recent studies by Kunkely and Vogler [H. Kunkely, A. Vogler, Inorg. Chem. Commun. 7 (2004) 767–769] describing nitrosyl loss during solution photolysis of an analogous dimethyldithiocarbamate derivative.