309956-59-0Relevant articles and documents
Thermal oxidative degradation of the functionally substituted 2,2′-dipyrrolylmethenes hydrobromides and difluoroborates
Yutanova,Berezin,Semeikin,Antina,Guseva,V'Yugin
, p. 545 - 551 (2013/08/23)
Thermal oxidative decomposition of samples of crystalline hydrobromide and borofluoride complexes (BODIPY) of a series of 2,2′-dipyrrolylmethenes (HL) was studied by means of thermogravimetry in an atmosphere of air oxygen. An increase in the degree and symmetry of substitution, aromaticity, and the length of the substituents in 4,4′-positions of the pyrrole ligand rings increases stability of the BODIPY-dyes to oxidative degradation. A comparative analysis of the influence of structural factors on the thermolability of hydrobromdes (HL·HBr), d-metal (ML2) and boron(III) complexes with 2,2′-dipyrrolylmethenes was carried out.
Synthesis and physicochemical properties of hydrobromides of alkyl-substituted dipyrrolylmethenes
Berezin,Semeikin,Antina,Pashanova,Lehedeva,Bukushina
, p. 1949 - 1955 (2007/10/03)
Hydrobromides of [(alkylpyrrol-2(1H)-ylidenio)methyl]pyrroles (α,α-dipyrrolylmethenes) and of their α,β and β,β isomers were prepared, and their resistance to oxidative thermal degradation was studied. The solvation properties of these compounds in various organic solvents were examined spectrophotometrically and calorimetrically.