TY - JOUR
T1 - Dinuclear phosphido- and arsenido-bridged early/late transition metal complexes. Efficient catalysts for ethylene polymerization
AU - Lindenberg, Frank
AU - Shribman, Tal
AU - Sieler, Joachim
AU - Hey-Hawkins, Evamarie
AU - Eisen, Moris S.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1996/5/31
Y1 - 1996/5/31
N2 - The reaction of (η5-C5H5)2Zr{P(SiMe3)2}2 with Ni(CO)4 yields the heterodinuclear phosphido-bridged complex (η5-C5H5)2Zr{μ-P(SiMe3)2}2Ni(CO)2 (1). 1 was characterised spectroscopically and by X-ray structure determination. The central four-membered ZrP2Ni ring is slightly puckered (dihedral angle between planes ZrP2/NiP2 = 1.8°). The Zr-P bond lengths are equivalent (Zr-P1 2.655(1), Zr-P2 2.652(1) Å), as are the Ni-P bond lengths (Ni-P1 2.264(1), Ni-P2 2.266(1) Å). The long Zr ⋯ Ni distance of 3.038(1) Å indicates the absence of a metal-metal bond. The heterodinuclear phosphido- and arsenido-bridged complexes (η5-C5H5)2Zr{μ-E(SiMe3)2}2M(CO)n [E = P; M(CO)n = Ni(CO)2 (1) or Mo(CO)4 (2); and E = As, M(CO)n = Cr(CO)4 (3)] react rapidly with methylaluminoxane, yielding catalytically active complexes which rival the known cationic systems for the polymerization of ethylene.
AB - The reaction of (η5-C5H5)2Zr{P(SiMe3)2}2 with Ni(CO)4 yields the heterodinuclear phosphido-bridged complex (η5-C5H5)2Zr{μ-P(SiMe3)2}2Ni(CO)2 (1). 1 was characterised spectroscopically and by X-ray structure determination. The central four-membered ZrP2Ni ring is slightly puckered (dihedral angle between planes ZrP2/NiP2 = 1.8°). The Zr-P bond lengths are equivalent (Zr-P1 2.655(1), Zr-P2 2.652(1) Å), as are the Ni-P bond lengths (Ni-P1 2.264(1), Ni-P2 2.266(1) Å). The long Zr ⋯ Ni distance of 3.038(1) Å indicates the absence of a metal-metal bond. The heterodinuclear phosphido- and arsenido-bridged complexes (η5-C5H5)2Zr{μ-E(SiMe3)2}2M(CO)n [E = P; M(CO)n = Ni(CO)2 (1) or Mo(CO)4 (2); and E = As, M(CO)n = Cr(CO)4 (3)] react rapidly with methylaluminoxane, yielding catalytically active complexes which rival the known cationic systems for the polymerization of ethylene.
KW - Crystal structure
KW - Early/late heterodinuclear phosphide- and arsenido-bridged complexes
KW - Ethylene polymerization
KW - Zirconocene
UR - http://www.scopus.com/inward/record.url?scp=0030607955&partnerID=8YFLogxK
U2 - 10.1016/0022-328X(95)06060-A
DO - 10.1016/0022-328X(95)06060-A
M3 - 文章
AN - SCOPUS:0030607955
SN - 0022-328X
VL - 515
SP - 19
EP - 25
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 1-2
ER -