Metal carbonyl photochemistry. Part 2. Photochemistry of hexacarbonyls in glasses containing oxygen donors; the species [M(CO)5(mthf)](M = Cr, Mo, W, or V–I), cis-[M(CO)4(mthf)2], and fac-[M(CO)3(mthf)3](M = Cr, Mo, or W)

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The title species have been prepared by photolysis of [M(CO)6] in mthf glass at 77 K, and (for M = Mo or W) in doped hydrocarbon glasses {in which there is evidence for photoconversion of Mo(CO)5 into [Mo(CO)5(mthf)]}. The compounds [Mo(CO)5(CH3COCH3)], [Mo(CO)5(OCHCH3)], and [Mo(CO)5(HOR)] have also been characterised at low temperature.