TY - JOUR
T1 - Reactivity of P2N2 and P2N2H4 towards C7H8M(CO)4 (M = Cr, Mo). X-ray structure of fac-(CO)3Mo[PN2P(O)]
AU - WONG, Rick W K
AU - Gao, Jing Xing
AU - Wong, Wing Tak
N1 - Funding Information:
Acknowledgements-W.-K. W. thanks the Hong Kong BaptistC ollegea nd theU PGC (Hong Kong) for financial support. W.-T. W. thanks the Hong Kong Research Grant Council and the University of Hong Kong for financial support.
PY - 1993/5
Y1 - 1993/5
N2 - The interaction of C7H8M(CO)4(M = Cr, Mo) with half an equivalent of P2N2 (P2N2 = N,N′-bis[o-(diphenylphosphino)benzylidene]ethylenediamine) in THF at ambient temperature gives [cis-(CO)4M]2(P2N2) (I, M = Cr; II, M = Mo) in high yield. The interaction of C7H8M(CO)4 with 1 equivalent of P2N2 in refluxed THF gives [cis-(CO)4M]2(P2N2), fac-(CO)3M(PN2P) (III, M = Cr; IV, M = Mo) and fac-(CO)3M [PN2P(O)] (V, M = Mo). The yield of the products depends on the length of the reaction time. For a short reaction time the major product is [cis-(CO)4M]2(P2N2), whereas for a long reaction time fac-(CO)3M(PN2P) is the major product. However, the interaction of C7H8Cr(CO)4 with 1 equivalent of P2N2H4 (P2N2H4 = N,N′-bis[o-(diphenylphosphino)benzyl]ethylenediamine) in refluxed THF produces [cis-(CO)4Cr]2(P2N2H4) (VI as the only isolated product in high yield. Prolonged refluxing of [cis-(CO)4M]2(P2N2) with P2N2 in THF does not give fac-(CO)3M(PN2P). In solution IV slowly oxidizes to V, whose structure has been determined by X-ray crystallography.
AB - The interaction of C7H8M(CO)4(M = Cr, Mo) with half an equivalent of P2N2 (P2N2 = N,N′-bis[o-(diphenylphosphino)benzylidene]ethylenediamine) in THF at ambient temperature gives [cis-(CO)4M]2(P2N2) (I, M = Cr; II, M = Mo) in high yield. The interaction of C7H8M(CO)4 with 1 equivalent of P2N2 in refluxed THF gives [cis-(CO)4M]2(P2N2), fac-(CO)3M(PN2P) (III, M = Cr; IV, M = Mo) and fac-(CO)3M [PN2P(O)] (V, M = Mo). The yield of the products depends on the length of the reaction time. For a short reaction time the major product is [cis-(CO)4M]2(P2N2), whereas for a long reaction time fac-(CO)3M(PN2P) is the major product. However, the interaction of C7H8Cr(CO)4 with 1 equivalent of P2N2H4 (P2N2H4 = N,N′-bis[o-(diphenylphosphino)benzyl]ethylenediamine) in refluxed THF produces [cis-(CO)4Cr]2(P2N2H4) (VI as the only isolated product in high yield. Prolonged refluxing of [cis-(CO)4M]2(P2N2) with P2N2 in THF does not give fac-(CO)3M(PN2P). In solution IV slowly oxidizes to V, whose structure has been determined by X-ray crystallography.
UR - http://www.scopus.com/inward/record.url?scp=0000644512&partnerID=8YFLogxK
U2 - 10.1016/S0277-5387(00)87183-1
DO - 10.1016/S0277-5387(00)87183-1
M3 - Journal article
AN - SCOPUS:0000644512
SN - 0277-5387
VL - 12
SP - 1047
EP - 1053
JO - Polyhedron
JF - Polyhedron
IS - 9
ER -