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Title: Synthesis and characterization of a series of polymer-immobilized clusters of osmium
Authors: Liang, WT
Li, D
Lau, PL
Xu, LL 
Yang, C
Wei, MD
Chan, WTK 
Wong, WY 
Keywords: Carbonyl clusters
Issue Date: 2018
Publisher: Elsevier
Source: Journal of organometallic chemistry, 1 Sept. 2018, v. 870, p. 8-15 How to cite?
Journal: Journal of organometallic chemistry 
Abstract: Treatment of [Os-3(CO) (10)(NCMe) (2)] with an equimolar amount of 4-vinylpyridine, 4-ethynylpyridine and 4-ethylpyridine at room temperature readily gave the cluster complexes [Os-3(mu-H)(CO)(10)(mu-NC5H3CH = CH2)] 1, [Os-3(mu-H)(CO)(10)(mu-NC5H3C= CH)](2) and [Os3(CO)(10)(mu-H)(mu-NC5H3CH2CH3)](3), respectively. The corresponding ruthenium analogue of 1, [Ru-3(mu-H)(CO)(10)(mu-NC5H3CH = CH2)] (4), was also prepared in good yield by thermal reaction of Ru-3(CO)(12) with 4-vinylpyridine. Then, five thermally stable polymer-immobilized clusters of osmium 5-9 have been synthesized by the solution copolymerization of triosmium cluster-based monomers 1 and 2 with styrene, methyl methacrylate, vinylferrocene and 4-vinylphenylboronic acid, respectively, in the presence of alpha,alpha'-azobis(isobutyronitrile) (AIBN) in chloroform at 60 degrees C. Characterization of all new compounds was achieved by a combination of FTIR, NMR, MS, GPC, electronic absorption and thermal gravimetric analysis techniques. Crystal structure determinations were also carried out for complexes 1, 3 and 4.
ISSN: 0022-328X
DOI: 10.1016/j.jorganchem.2018.06.006
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