Biomimetic oxo-, dioxo- and oxo-peroxo-hydrazonato-vanadium(iv/v) complexes
作者:Mannar R. Maurya、Shilpa Khurana、Wenjian Zhang、Dieter Rehder
DOI:10.1039/b202852m
日期:——
Hacpy-bhz II; acpy = acetylpyridine, inh = isonicotinic acid hydrazide, bhz = benzoylhydrazide) in dry methanol to yield the oxovanadium(IV) complexes [VOL(acac)] (HL = I: 1, HL = II: 3). The dioxovanadium(V) complexes [VO2L] (HL = I: 2, HL = II: 4) are obtained by aerial oxidation of 1 and 3 in methanol. Treatment of 1 and 3, or 2 and 4, with H2O2 yields the oxoperoxovanadium(V) complexes [VO(O2)L]
unsymmetrical bis‐pyridyl hydrazone ligand that can act both as a bridging and as a chelating ligand. In all three the lead center is hemidirectionally coordinated and is thus sterically optimal for participation in tetrelbonding. In the crystal structures of all three compounds, the lead atoms participate in short contacts with thiocyanate sulfur or nitrogen atoms. These contacts are shorter than the
Pesticidal and antifertility activities of triorganogermanium(IV) complexes synthesized using a green chemical approach
作者:Nirmala Singh、Sheenam Watts、Suresh C. Joshi、Ran V. Singh
DOI:10.1002/aoc.2960
日期:2013.5
Microwave chemistry is a green chemical method that improves reaction conditions and product yields while reducing solvent amounts and reaction times. This paper deals with the synthesis, spectral and biological studies of germanium(IV) complexes with chelating hydrazones derivedfrom 1‐(pyridine‐2‐yl)ethanone (F1) and 1‐(furan‐2‐yl)ethanone (F2) with isonicotinohydrazide (INH). The complexes have been
analysis. The crystal form of 1 shows two different Pb coordination spheres in the structure, with the crystal taking three-dimensionalcoordinationpolymer shape. The coordination numbers of lead (II) centers are seven and eight with holodirected and hemidirected coordination sphere. The adjoining chains are linked by pi-pi interactions of the adjacent aromatic 2-apinh rings and several other relatively weak
Synthesis, X-ray characterization, DFT calculations and Hirshfeld surface analysis of Zn(<scp>ii</scp>) and Cd(<scp>ii</scp>) complexes based on isonicotinoylhydrazone ligand
作者:Farhad Akbari Afkhami、Ali Akbar Khandar、Ghodrat Mahmoudi、Waldemar Maniukiewicz、Janusz Lipkowski、Jonathan M. White、Rory Waterman、Santiago García-Granda、Ennio Zangrando、Antonio Bauzá、Antonio Frontera
DOI:10.1039/c6ce00877a
日期:——
manuscript we report the synthesis and X-ray characterization of four Zn(II) complexes and three Cd(II) complexes with an asymmetrical hydrazone–pyridine basedligand HL = 2-acetyl-pyridyl-isonicotinoylhydrazone (HAPIH)}; i.e. [Zn(HL)2](NO3)2·H2O} (1), [Zn(HL)Br2] (2), [Zn(HL)I2] (3), [Zn(HL)(NCS)2] (4), [Cd(L)2] (5), [Cd(HL)Br2]·CH3OH} (6) and [Cd(HL)I2]·2CH3OH} (7). The Schiff base acts as a tridentate