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|標題:||Preparation and characterization of cobalt-containing alcohols and diols||作者:||Lee, J.C.
|關鍵字:||cobalt-containing diols;cobalt-containing alcohols;alkyne-bridged;dicobalt complex;Dppm;PPh2NHPPh2;suzuki coupling reactions;organocobalt complexes;aluminum;isopropoxide;epsilon-caprolactone;efficient catalysts;carbonyl-complexes;phosphine ligand;polymerization;trimethylaluminum;copolymers||Project:||Polyhedron||期刊/報告no：:||Polyhedron, Volume 26, Issue 13, Page(s) 2987-2996.||摘要:||
A series of cobalt-containing alcohols and diols were prepared and characterized. Intramolecular hydrogen-bonding was observed for the cobalt-containing diols [COI(CO)6( mu-eta-(HO)R1R2CC CCR1,R,(OH)] (1: R, = CH3, R-2 = C2H5; 2: R, = CH3, R, = C(3)HA [CO'-(CO)6( mu-eta-(HO)Ph-2,CC CCPh (OH)] (3) and [(mu-PPh2CH h 2 - 2PP I)CO2(CO)4(P-yl-(HO)ph2CC CCPh,(OH)] (4). Potentially all the four compounds could serve as chelating 0,O-ligands. In principle, it is possible for compounds [(p-PPh,NHPPh1)CO2(CO)(4)(mu-eta-HC=-CCPh2,OH)] (5b), [CO2(CO)6(mu-eta-HC CC2H4OH] (6) and [Co2(CO)6(mu-eta-HC CC3H6OH)] (7) in their syn-conformations to behave as chelating 0,N-ligands. To the best of our knowledge, compounds 5b, 6 and 7 are the first reported examples of PPh2,NHPPh2,-bridged dicobalt complexes. (c) 2007 Elsevier Ltd. All rights reserved.
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