Search results for "biimidazole"

CCDC 1443456: Experimental Crystal Structure Determination

2017

Related Article: Rajendhraprasad Tatikonda, Elina Kalenius, Matti Haukka|2016|Inorg.Chim.Acta|453|298|doi:10.1016/j.ica.2016.08.015

CCDC 1443455: Experimental Crystal Structure Determination

2017

Related Article: Rajendhraprasad Tatikonda, Elina Kalenius, Matti Haukka|2016|Inorg.Chim.Acta|453|298|doi:10.1016/j.ica.2016.08.015

Synthesis and investigation of coordinative properties of biimidazole-derived ligands

2015

For this thesis a study of the coordination properties of biimidazole-based compounds was performed. The thesis is divided into two parts: literature part, where the chemistry and application of biimidazole and its derivatives are discussed, and experimental part, where the synthesis and coordination properties of biimidazole-based ligands are studied and discussed. The literature part contains a discussion of coordinative properties of biimidazole-derived ligands and a discussion of different types of weak interactions. Definition, nature and examples of hydrogen and different types of π-bonding were considered in detail. Due to chemical properties of biimidazole-derived compounds they hav…

Synthesis of tetrasubstituted-4,4'-biimidazoles with perspective heavy-metal sensing ability

2012

Synthesis and characterization of Zwitterionic Zn(II) and Cu(II) coordination compounds with ring-substituted 2,2′-biimidazole derivatives

2016

Zwitterionic coordination compounds with strongly asymmetrical charge distribution were synthesized and characterized. Ring-substituted biimidazoles were used as the primary ligands for Zn and Cu compounds. Formation of Zwitterionic coordination compound was found to be strongly dependent on the pH of the reaction medium as well as on the ring and nitrogen substituents of the ligand. Reaction of the Df-R2biim (Df-R2biim = 2,2′-bi-1R-imidazole-5,5′-dicarboxaldehyde, R = Me, Et or Pr) with ZnCl2 in neutral conditions led to binuclear compounds [Zn2Cl4(Df-R2biim)2] with two bridging ligands (1a–c). Reaction with CuCl2·2H2O gave neutral mononuclear compound [CuCl2(Df-Me2biim)] (1d) with chelati…