Complexation and metallation of the multifunctional [Ph2P(o-C6H4)CH
N(CH2)2(o-C5H4N)] ligand on triosmium carbonyl clusters
Abstract
Reaction of the N(CH2)2(o-C5H4N) (abbreviated to PNN) with [Os3(CO)10(NCMe)2] at ambient temperature affords {Os3(CO)10[η2-Ph2P(o-C6H4)CH
N(CH2)2(o-C5H4N)]}
1.
N(CH2)2(o-C5H4N)]}
2, and C–H
NCH2C
H(o-C5H4N)]}
3 and {(μ-H)Os3(CO)8[μ-η4-Ph2P(o-C6H4)C
N(CH2)2(o-C5H4N)]}
4. In contrast, co-pyrolysis of [Os3(CO)12] with PNN in a sealed tube results in 2, 3 and the diosmium phosphido complex {Os2(CO)5(μ-PPh2)[μ-η3-Ph2P(o-C6H4)C
N(CH2)2(o-C5H4N)]}
5. The structures of 1, 3, 4 and 5 have been determined by an X-ray diffraction study. Compounds 3 and 4 are isomers with the