Silyl-, germyl-, and stannyl-substituted group 6 pentacarbonyl metalates

Reactions of silylated silyl-, germyl-, and stannyl anions with group 6 halogenpentacarbonyl metalates gave the respective pentacarbonyl metalate derivatives. With the exception of a stannylated chromate all compounds were obtained in good yields and selectivity. An alternative approach employing group 6 metal hexacarbonyls in the reaction with the group 14 anions worked equally well. All compounds were fully characterized spectroscopically, and four compounds were subjected to single-crystal structure analysis.