Synthesis of metallocenes of zirconium, hafnium, manganese, iron, tin, lead and half-sandwich complexes of rhodium and iridium containing the ligands (η-C5R4CR′2PMe2), where R and R′ may be H or Me

The dimethylphosphino substituted cyclopentadienyl precursor compounds [M(C5Me4CH2PMe2)], where M = Li+ (1), Na+ (2), or K+ (3), and [Li(C5H4CR'2PMe2}] where R'(2) = Me-2 (4), or (CH2)(5) (5), [HC5Me4CH2PMe2H]X, where X- = Cl- (6) or PF6- (7) and [HC5Me4CH2PMe2] (8), are described. They have been used to prepare new metallocene compounds, of which representative examples are [Fe(eta -C5R4CR'2PMe2)(2)] where R=Me R'=H (9); R=H and R'(2)=Me-2 (10), or (CH2). (11), [Fe(eta -C5H4CMe2PMe3)(2)]I-2 (12), [Fe{eta -C5Me4CH2P(O)Me-2}(2)] (13), [Zr(eta -C5R4CR'2PMe2)(2)Cl-2], where R=H, R'=Me(14), or R=Me, R'=H (15), [Hf(eta -C5H4CMe2PMe2)(2)]Cl-2] (16), [Zr(eta -C5H4CMe2PMe2)(2)Me-2] (17), {[Zr(eta -C5Me4CH2PMe2)(2)]Cl} {(C6F5)(3)-BCIB(C6F5)(3)} (18), [Zr{(eta -C5Me4CH2PMe2)(2)Cl-2}PtI2] (19), [Mn(eta -C5Me4CH2PMe2)(2)] (20), [Mn{(eta -C5Me4CH2PMe2B(C6F5)(3)}(2)] (21), [Pb(eta -C5H4CMe2PMe2)(2)] (23), [Sn(eta -C5H4CMe2PMe2)(2)] (24), [Pb{eta -C5H4CMe2PMe2B(C6F5)(3)}(2)] (25), [Pb(eta -C5H4CMe2PMe2)(2)PtI2] (26), [Rh(eta -C5Me4CH2PMe2)(C2H4)] 29, [M(eta ,KP-C5Me4CH2PMe2)I-2] where M = Rh (30), or Ir, (31). (C) 2001 Elsevier Science B.V. All rights reserved.