Transition metal complexes with 2-(N-tosylamino)benzaldehyde 1-phthalazinylhydrazone

A computational study of structural and magnetic properties of bi- and trinuclear Cu(II) complexes with extremely long Cu---Cu distances

“…between the corresponding singly-occupied molecular orbitals (so-called SOMOs), determines the type of coupling -ferromagnetic when the ground electronic state corresponds to the high-spin configuration with parallel orientation of electronic spins and antiferromagnetic when the ground electronic state is characterized by the low total spin with antiparallel orientation of the electronic spins [1,2]. Nowadays, the most prevalent and well studied organometallic magnetic systems are dinuclear copper(II) complexes with different types of linkers between the ligand-coordinated magnetic centers (-Hal-, [6,7], -OH-, [4,6,8,9] -OR-, [10][11][12][13] CN-, [14] -N^N-, [8,9,15] -N^O- [16,17] etc.). These complexes can demonstrate a variety of coupling types from strongly antiferomagnetic (exchange coupling constant J CuCu is strongly negative up to -1000 cm -1 ) [4][5][6] to moderately ferromagnetic (J CuCu is positive, typically of order 100 cm -1 ) [10,18].…”

Molecular and crystal structure of iron(III) and nickel(II) complexes with 1′-phthalazinylhydrazones of heterocyclic carbonyl compounds

“…This work is a continuation of the study of the complexing ability of phthalazinylhydrazones of polyfunctional carbonyl compounds [10][11][12][13][14]. Here we report the results of the single crystal X-ray diffraction analysis of iron(III) and nickel(II) complexes with 1′-phthalazinylhydrazones of 2-acetyl benzimidazole (HL) and 1-phenyl-3-methyl-4-formyl-5hydroxypyrazole (H 2 L′).…”

“…The possibility of a bidentate or tridentate coordination of 1′-phthalazinylhydrazones in different tautomeric forms predetermines a wide variety of the forms of the complexes whose composition depends on the structural features of the ligand, synthesis conditions, and the nature of the complexing metal [6][7][8][9][10]. Unlike the majority of other hetarylhydrazones, 1′-phthalazinylhydrazones can also act as chelate-bridging N,N′ donor ligands, which enables the preparation of binuclear complexes based on them [11,12].This work is a continuation of the study of the complexing ability of phthalazinylhydrazones of polyfunctional carbonyl compounds [10][11][12][13][14]. Here we report the results of the single crystal X-ray diffraction analysis of iron(III) and nickel(II) complexes with 1′-phthalazinylhydrazones of 2-acetyl benzimidazole (HL) and 1-phenyl-3-methyl-4-formyl-5hydroxypyrazole (H 2 L′).…”

“…The possibility of a bidentate or tridentate coordination of 1′-phthalazinylhydrazones in different tautomeric forms predetermines a wide variety of the forms of the complexes whose composition depends on the structural features of the ligand, synthesis conditions, and the nature of the complexing metal [6][7][8][9][10]. Unlike the majority of other hetarylhydrazones, 1′-phthalazinylhydrazones can also act as chelate-bridging N,N′ donor ligands, which enables the preparation of binuclear complexes based on them [11,12].…”

Ferrocenoylhydrazone of 2-N-tosylaminobenzaldehyde: Structure, properties, and complexing ability

“…In particular, so far, only one ferrocenoylhydrazone was investigated by X-ray diffraction analysis (XRD) method [30]. The literature data on the hydrazones of 2-N-tosylaminobenzaldehyde are also scarce [31][32][33][34].…”