A new water-soluble sulfonated cobalt(II) phthalocyanines: Synthesis, spectral, coordination and catalytic properties

Abstract

Novel complexes of cobalt(II) with sulfonated derivatives of phthalocyanines are synthesized. The influence of the sulfonated group's number in peripheral substituent on solubility of macrocycle and ability to form ordered structures in solution is showed. Transition from H-aggregates to monomeric phthalocyanine structures and sandwich-type dimers was found during formation of metallophthalocyanine complexes with 1,4-diazabicyclo[2.2.2]octane. The catalytic activity of metallophthalocyanines was studied on the model of Merox process.

Symmetrical and difunctional substituted cobalt phthalocyanines with benzoic acids fragments: Synthesis and catalytic activity

“…Analysis of obtained results and literature data [25][26][27] suggests that for Co(X)Pc4-6 the mechanism including triple complex formation with followed elimination of RS…”

Sulfonated octa‐substituted Co(II) phthalocyanines immobilized on silica matrix as catalyst for Thiuram E synthesis

“…Cobalt phthalocyanines (Figure ) were synthesized via template method from corresponding phthalonitriles (supplementary materials).…”

“…Moreover, dissolved metal phthalocyanines aggregate affecting catalysis and first of all the selectivity of catalyst significantly. The possible way to avoid aggregation of phthalocyanines metal complex is immobilization of the compound on organic or inorganic polymer matrixes .…”

Tetrasubstituted (4-Chlorophenoxy)- And (2,4,5-Trichlorophenoxy)phthalocyanine Metal(ii) Complexes and Their Sulphonated Derivatives: Synthesis and Properties

“…As it is well known, [23][24] cobalt complexes of phthalocyanines are widely used as catalysts for oxidation of mercaptans and hydrogen sulfide in petrochemical processes. These catalysts allow the oxidation process to be carried out under mild conditions, which prevents further oxidation of the disulfide and leads to a significant increase in the quality of the product.…”