Synthesis and structure of a Ni(II) complex with N′,N′ 2-bis[(1E)-1-(2-quinolyl)methylene]propanedihydrazide: multiple intramolecular CH ··· π interactions between quinoline and quinolineimine chelate

摘要

A new malonic dihydrazide-based ligand, N′,N′ 2-bis[(1E)-1-(2-quinolyl)methylene]propanedihydrazide (H₂L3), has been prepared and characterized by elemental analysis, IR, 13C NMR, and 1H NMR spectroscopies. In the reaction of H₂L3 with Ni(II) a binuclear complex has been obtained. The structure of the complex was established by X-ray analysis. Each Ni(II) is coordinated with two NNO donor sets from two ligand molecules in dianionic form (L32-) forming an octahedral geometry. Multiple intramolecular C-H ··· π (chelate ring) interactions support the molecular geometry of the [Ni₂(L3)₂] complex. The structure of [Ni₂(L3)₂] is compared with those of analogous Ni(II) complexes with pyridine dihydrazone type ligands. Magnetic behavior of the dinuclear complex was studied in temperature range of 2-300 K.View full textDownload full textKeywordsNi(II) complexes, X-ray structure, Intramolecular interactionsRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/00958972.2012.658778