Synthesis,Reactivity, and Structural Characterization of Dioxovanadium(V) Complexes with Tridentate Schiff Base Ligand: Vanadium Complexes in Supramolecular Networks |
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Authors: | Winfried Plass Hakan‐Peter Yozgatli |
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Abstract: | The synthesis, characterization and crystal structure analysis of the ammonium salt of the dioxovanadium(V) complex NH4VO2(salhyph)] with the tridentate Schiff base ligand derived from salicylaldehyde and benzoic acid hydrazide (H2salhyph) is reported. NH4VO2(salhyph)] crystallizes in the monoclinic space group Pn with a = 708.8(2), b = 1444.3(3), c = 717.1(2) pm and β = 101.09(2)°. The vanadium atom of the dioxovanadium(V) moiety has a distorted square‐pyramidal coordination geometry. Extensive hydrogen bonding is observed between the ammonium cation and the oxygen atoms coordinated to the vanadium atom yielding to a two‐dimensional network, where the complex anions are arranged in a bilayer. Additional crystal packing within the bilayer appears to be controlled mostly by π stacking between the aromatic rings of the ligand. The reactions of NH4VO2(salhyph)] with several proton acidic compounds including water, methanol, and proton acids lead to neutral monooxovanadium(V) and dioxovanadium(V) complexes (VO2(Hsalhyph)], V2O3(salhyph)2] and VO(OMe)(salhyph)(HOMe)]). |
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Keywords: | Vanadium Hydrogen bonding Salicylidenehydrazides Schiff base Crystal structure |
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