11 research outputs found
Synthesis and variable coordination modes of a bis-thiophene-appended macrocycle in complex with cobalt(III)
The bis-thiophene appended cyclam derivative L (trans-6,13-dimethyl-6,13-bis(thiophene-3′-ylmethylamino)-1,4,8,11-tetraazacyclotetradecane) has been synthesised, characterised and complexed with Co. The crystal structure of the diprotonated ligand as its cyanoborohydride salt [HL][NCBH] is reported. Variable coordination modes to Co have been identified that find the ligand binding either as a tetradentate (cyclam-like) macrocycle in the structurally characterised complexes trans-[CoLCl]Cl and trans-[CoL(NCBH)(OH)]Cl or as a hexadentate in [CoL]Cl where both functionalised exocyclic amines coordinate in trans coordination sites. In this case, we have found that the structure of the hexadentate coordinated complex [CoL] is significantly tetragonally elongated due to steric effects of the thiophene rings and this also leads to a very large 500 mV anodic shift in the Co redox potential relative to the unsubstituted hexaamine complex of Co
Synthesis of polyaniline using electrochemical polymerization and application in a sensitive DNA biosensor with [Ru(bpy)3]2+ functionalized nanoporous gold composite as label
Synthesis, Structure and Photoluminescence Properties of Mixed-Valent Trinuclear Copper Complex Assembled from Bis(N-imidazolyl)methane
A conducting nanocomposite via intercalative polymerisation of 2-methylaniline with aniline in montmorillonite cation-exchanged
Dual-Emissive Langmuir–Blodgett Films of a 9,9-Bis(4-ethynylphenyl)fluorene Derivative of Gold(I) and Some Europium-Substituted Polyoxometalates: Preparation, Characterization and Photoelectric Properties
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Electrochemical studies of bi- and polymetallic complexes featuring acetylide based bridging ligands
Acetylide-based bridging ligands have been widely used in the preparation of complexes that display a degree of electronic interaction between metal-based redox groups located at the ligand termini. The electrochemical response of these systems has been selectively reviewed, with a focus on the variation in properties that accompany changes in the structure of the bridging ligand and the nature of the metal groups