Search results for "Monodentate pyz and 4"

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The key role of hydrogen bonding in the nuclearity of three copper(II) complexes with hydrazone-derived ligands and nitrogen donor heterocycles

2011

International audience; Three new Cu(II) complexes of formula [Cu(L1)(pyz)(CH3OH)]ClO4 (1), [Cu(L1)(4,4′-bpy)(ClO4)]·0.5H2O (2) and [{Cu(L2)(ClO4)}2(μ-4,4′-bpy)] (3) have been synthesised by using pyrazine (pyz) and 4,4′-bipyridine (4,4′-bpy) and tridentate O,N,O-donor hydrazone ligands, L1H and L2H, obtained by the condensation of 1,1,1-trifluoro-2,4-pentanedione with salicyloylhydrazide and benzhydrazide, respectively. The ligands and their complexes have been characterized by elemental analyses, FT-IR, and UV–Vis spectroscopies. Single crystal X-ray structure analysis evidences the metal ion in a slightly deformed square pyramidal geometry in all the complexes. However complexes 1 and 2 …

Hydrogen bondingDenticityPyrazineStereochemistryHydrazonechemistry.chemical_elementAntiferromagnetic couplingCrystal structure[CHIM.INOR]Chemical Sciences/Inorganic chemistry010402 general chemistry010403 inorganic & nuclear chemistry01 natural sciencesInorganic Chemistrychemistry.chemical_compoundMaterials Chemistry[CHIM.CRIS]Chemical Sciences/Cristallography[CHIM]Chemical SciencesMonodentate pyz and 4Physical and Theoretical ChemistryCu(II) hydrazone complexescopper complexhydrazone ligandchemistry.chemical_classificationhydrogen bondHydrogen bondSelf assemblyCopperSquare pyramidal molecular geometry0104 chemical sciencesCrystallographychemistryCrystal structures4′-bpySingle crystalhydrogen bond; copper complex; hydrazone ligand
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