Topic
Hydrazone
About: Hydrazone is a research topic. Over the lifetime, 4853 publications have been published within this topic receiving 65160 citations. The topic is also known as: hydrazone.
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TL;DR: In this paper, solid state structures of five organotin(IV) hydrazone compounds were determined by elemental analysis, IR, NMR spectroscopy and for 1, 2, 3, 4 and 5 single crystal X-ray diffraction analysis.
54 citations
TL;DR: In this paper, cycloaddition between hydrazones and olefins was accelerated in the presence of a stoichiometric amount of BF 3 ·OEt 2 or a catalytic amount of Zr(OTf) 4, Hf(OF) 4, or Sc(OFTf) 3 under mild conditions.
53 citations
TL;DR: A general method for the preparation of substituted pyridazinopyrazolotriazines with substituents such as methyl, phenyl, ethoxycarbonyl, acetyl or benzoyl is reported.
53 citations
TL;DR: The ability of the 2,6-diacetylpyridine bis(aroyl hydrazone) ligands to form double helical complexes is analyzed in terms of the conformational flexibility of the ligands.
Abstract: A binuclear complex of Zn(II) with formula [Zn(dap(A)2)]2·2.25DMF (2·2.25DMF) and a Mn(II) coordination polymer with formula [Mn3(dap(In)2)3(H2O)2·2DMSO]n (3·2DMSO)n have been prepared and structurally characterized [dap(A)2 = dideprotonated form of 2,6-diacetylpyridine bis(anthraniloyl hydrazone); dap(In)2 = doubly deprotonated form of 2,6-diacetylpyridine bis(isonicotinoyl hydrazone)]. In the Zn(II) complex the molecular units are double helical, with the Zn(II) ions in a square pyramidal environment. The Mn(II) complex on the other hand is a coordination polymer containing two different types of hepta-coordinated Mn(II) ions, which differ in their axial ligands. The magnetic properties of the Mn(II) complex, along with those of a double helical pyridine bridged binuclear Ni(II) complex, earlier synthesized by us, are also reported. The ability of the 2,6-diacetylpyridine bis(aroyl hydrazone) ligands to form double helical complexes is analyzed in terms of the conformational flexibility of the ligands. The differences in the magnetic properties of the µ-N bridged binuclear complexes formed by 1,1 azido N-bridging ligands, and pyridine N-bridging ligands, is analyzed with the help of EHMO calculations.
53 citations
53 citations