Visible light photochemical reversal of hydride to carbene migration

Visible light photolysis of the complex CpMo(CO)2 {η2-CH(CH2)3NMe}, which is made by utilizing a hydride to carbene migration within the complex CpMoH (CO)2{C(CH2)3NMe}, results in reversal of the hydride to carbene migration to reform CpMoH(CO)2{C(CH2)3NMe}.