TY - JOUR
T1 - Reactivity of coordinated Ph2P(C5H5). Preparation of M(CO)6-n[Ph2P(C5H4Tl)]n complexes (M = Cr, Mo; n = 1, 2)
AU - Wong, Rick W K
AU - Lee, Fu Wa
N1 - Funding Information:
Microanalysesw erep erformedb y the Shanghai The proposeds tructurei s further supportedb y Instituteo f Organic Chemistry,C hineseA cademy the fact that whenV I was treatedw ith CF,CO*H, of SciencesC, hina. IR spectra( KBr pellets)w ere VII wasi solated.P resumablyu pon protonationV I recordedo n a Hitachi 270-30I R spectrometeor r producesc is- Mo(C0)4ph2P(C,H,)], (VIII), which on a Digilab FTS45 Fourier-transformI R spec-then undergoesD iels-Alder dimerizationt o give trometer; data are given in cm-‘. NMR spectra VII as showni n Scheme3 . were recordedo n a JEOL FX9OQ spectrometer.
PY - 1992
Y1 - 1992
N2 - The interaction of C7H8Cr(CO)4 with two equivalents of Ph2P(C5H5) in hexane at 0°C gives trans-Cr(CO)4[Ph2P(C5H5)]2 (I) in high yield (80%). In CDCl3 at 30°C, I isomerizes to cis-Cr(CO)4(Ph2PC10H10PPh2) (II) quantitatively. Compound II can also be prepared in high yield (85%) by the interaction of trans-Cr(CO)4(Ph2PCl)2 with two equivalents of TI(C5H5) in refluxing toluene. Treatment of M(CO)6 (M = Cr, Mo) with one equivalent of trimethylamine N-oxide in THF followed by the addition of one equivalent of Ph2P(C5H4Tl) affords M(CO)5[Ph2P(C5H4Tl)] (III, M = Cr; IV, M = Mo) and M(CO)4 [Ph2P(C5H4Tl)]2 (V, M = Cr; VI, M = Mo). M(CO)4[Ph2P(C5H4Tl)]2 adopts a trans- and a cis-configuration for chromium and molybdenum, respectively. The M(CO)4[Ph2P(C5H4Tl)]2 complex can also be prepared conveniently either by the interaction of C7H8]M(CO)4 with two equivalents of Ph2P(C5H4Tl) or by the interaction of M(CO)4[Ph2P(C5H5)]2 with two equivalents of Tl(OEt) in THF.
AB - The interaction of C7H8Cr(CO)4 with two equivalents of Ph2P(C5H5) in hexane at 0°C gives trans-Cr(CO)4[Ph2P(C5H5)]2 (I) in high yield (80%). In CDCl3 at 30°C, I isomerizes to cis-Cr(CO)4(Ph2PC10H10PPh2) (II) quantitatively. Compound II can also be prepared in high yield (85%) by the interaction of trans-Cr(CO)4(Ph2PCl)2 with two equivalents of TI(C5H5) in refluxing toluene. Treatment of M(CO)6 (M = Cr, Mo) with one equivalent of trimethylamine N-oxide in THF followed by the addition of one equivalent of Ph2P(C5H4Tl) affords M(CO)5[Ph2P(C5H4Tl)] (III, M = Cr; IV, M = Mo) and M(CO)4 [Ph2P(C5H4Tl)]2 (V, M = Cr; VI, M = Mo). M(CO)4[Ph2P(C5H4Tl)]2 adopts a trans- and a cis-configuration for chromium and molybdenum, respectively. The M(CO)4[Ph2P(C5H4Tl)]2 complex can also be prepared conveniently either by the interaction of C7H8]M(CO)4 with two equivalents of Ph2P(C5H4Tl) or by the interaction of M(CO)4[Ph2P(C5H5)]2 with two equivalents of Tl(OEt) in THF.
UR - http://www.scopus.com/inward/record.url?scp=0000124031&partnerID=8YFLogxK
U2 - 10.1016/S0277-5387(00)83333-1
DO - 10.1016/S0277-5387(00)83333-1
M3 - Journal article
AN - SCOPUS:0000124031
SN - 0277-5387
VL - 11
SP - 863
EP - 870
JO - Polyhedron
JF - Polyhedron
IS - 8
ER -