Conversion of CO2 into cyclic carbonates in the presence of metal complexes as catalysts
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Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Science Reviews 2000 Ltd
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The sterically hindered salicylaldimine ligands N,N'-(1,5-diaminonaphthalene)-3,5-bu(2)(t)-salicylaldimine (L-1), N,N'-(2,7-diaminofluaren)-3,5-bu(2)(t)-salicylaldimine (L-2) and N,N'-(1,8-diaminonaphthaline)-3,5-bu(2)(t)-salicylaldimine (L-3) have been synthesised by the condensation of 1,5-diaminonaphthalene, 2,7-diaminofluarene, and 1,8-diaminonaphthaline with 3,5-di-tert-butylsalicylaldehyde, respectively. Dinuclear M(II) complexes of L-1 and L-2 and mononuclear M(II) complexes of L-3 have been prepared using Cu(II), Ni(II), Co(II), and Mn(II) salts and characterised. The synthesised sterically-hindered, salen-type complexes were tested as catalysts for the formation of cyclic carbonates from CO2 and liquid epoxides (propylene oxide, epichlorohydrine, 1,2-epoxybutane and styrene oxide), which served as both reactant and solvent. Ligand structure and the type of metal centre have a marked influence on the catalytic activity. Mn(II) complexes showed the highest catalytic activity.
Açıklama
Anahtar Kelimeler
catalysis, Schiff bases, spectroscopy, transition metals compounds, CO2, cyclic carbonate
Kaynak
Journal of Chemical Research
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
Sayı
11
