Studies on the relative stabilities of Mn(II) and Mn(III) in complexes with N4O2 donor environments: crystal structures of [Mn(pybzhz)2] and [Mn(Ophsal)(imzH)2] ClO4 (pybzhz =N-(benzoyl)-N′-(picolinylidene) hydrazine, Ophsal =N,N′-o-phenylenebis(salicylideneimine), imzH = imidazole)

Synthesis, characterization, and crystal structure of [Ni(dap(A)2)]2 (dap(AH)2: 2,6-diacetylpyridine bis(anthraniloyl hydrazone))—a molecule possessing an infinite double helical chain in the solid state

“…1). However, to our surprise, we found that even after using different carbonyls as well as varying reaction conditions, only I can be isolated [10,11]. Similar observations were reported by Ghosh et al [12,13,18].…”

“…In our laboratory, presently, we are investigating [10,11] the diverse coordination geometry generated by various aroyl hydrazones and how it affects the relative stabilities of different oxidation states of a given metal. During these investigations, we have come across the very interesting chemistry of anthraniloyl hydrazide (AH) and various hydrazones formed by it on reacting with a variety of carbonyl compounds and the metal complexes of such hydrazones.…”

Synthesis, characterization and extraction studies of some metal (II) complexes containing (hydrazoneoxime and bis-acylhydrazone) moieties

“…The characteristic oxime OH proton is observed at d 11.62 ppm (s, 1H). These chemical shifts are characteristic value for hydrazones and oximes [30][31][32] (Table 2).…”

Microwave-assisted synthesis and characterization and theoretical calculations of the first example of free and metallophthalocyanines from salen type Schiff base derivative bearing thiophen and triazole heterocyclic rings

“…The input structures of the complexes were optimized using MM+ method [35]. If the optimized geometry was found to have different conformation, from that in which it coordinates to a metal ion, some of the torsion angles were appropriately modified to obtain the correct conformation, corresponding to the coordination mode and then the geometry optimizations were made using the ZINDO/S method for MPc [35]. Furthermore, the single point calculations at HF level were carried out on all structures [36,37].…”