TY - JOUR
T1 - The ethylsulfinate ligand
T2 - A highly efficient initiating group for the zinc β-diiminate catalyzed copolymerization reaction of CO2 and epoxides
AU - Eberhardt, Robert
AU - Allmendinger, Markus
AU - Luinstra, Gerrit A.
AU - Rieger, Bernhard
PY - 2003/1/6
Y1 - 2003/1/6
N2 - The quantitative synthesis of a series of new zinc(II) sulfinate complexes (4a-e) by insertion of SO2 into zinc-ethyl bonds of β-diiminate complexes ((ArN=C(CH3)CH=(CH3)CNAr)Zn(O(S=O)Et); Ar = 2,6-diisopropylphenyl (4a), 2,6-diethylphenyl (4b), 2-ethyl-6-isopropylphenyl (4c), 2,6-diphenylphenyl (4d), 2,6-bis(4-tert-butylphenyl)phenyl (4e)) is described. X-ray structure analysis reveals a dinuclear, μ-ethylsulfinate-bridged structure for 4a in the solid state, which in solution exists in an equilibrium with the mononuclear species. The easily accessible complexes 4a-c are highly active catalysts for the alternating copolymerization of CO2 and cyclohexene oxide, leading to products with narrow molecular weight distributions.
AB - The quantitative synthesis of a series of new zinc(II) sulfinate complexes (4a-e) by insertion of SO2 into zinc-ethyl bonds of β-diiminate complexes ((ArN=C(CH3)CH=(CH3)CNAr)Zn(O(S=O)Et); Ar = 2,6-diisopropylphenyl (4a), 2,6-diethylphenyl (4b), 2-ethyl-6-isopropylphenyl (4c), 2,6-diphenylphenyl (4d), 2,6-bis(4-tert-butylphenyl)phenyl (4e)) is described. X-ray structure analysis reveals a dinuclear, μ-ethylsulfinate-bridged structure for 4a in the solid state, which in solution exists in an equilibrium with the mononuclear species. The easily accessible complexes 4a-c are highly active catalysts for the alternating copolymerization of CO2 and cyclohexene oxide, leading to products with narrow molecular weight distributions.
UR - http://www.scopus.com/inward/record.url?scp=0037421460&partnerID=8YFLogxK
U2 - 10.1021/om020734f
DO - 10.1021/om020734f
M3 - Article
AN - SCOPUS:0037421460
SN - 0276-7333
VL - 22
SP - 211
EP - 214
JO - Organometallics
JF - Organometallics
IS - 1
ER -