Alkali metal ion mediated self-assembly of vanadium(V) ions and pyrazole based polydentate ligands leading to the formation of helix, double helix and supramolecular cage-like structures

被引：13

作者：

Hazra, Arijit ^{[1
]}

Gupta, Sarnik ^{[1
]}

Roy, Somnath ^{[1
]}

Mandal, Tarak Nath ^{[1
]}

Das, Kinsuk ^{[2
]}

Konar, Saugata ^{[1
]}

Jana, Atanu ^{[1
]}

Ray, Sangita ^{[1
]}

Butcher, Ray J. ^{[3
]}

Kar, Susanta Kumar ^{[1
]}

机构：

[1] Univ Coll Sci, Dept Chem, Kolkata 700009, India

[2] Haldia Govt Coll, Dept Chem, Debhog 721657, Purba Midnapur, India

[3] Howard Univ, Dept Chem, Washington, DC 20059 USA

来源：

POLYHEDRON | 2011年 / 30卷 / 01期

关键词：

V(V) complexes; Schiff base ligand; Heterocycle based ligands; Heterometallic coordination polymer; X-ray crystallography; DONOR LIGANDS; COMPLEXES; CHEMISTRY; COPPER(I); COMPOUND; HELICATE; CRYSTAL; ARRAYS; UNITS; ACID;

D O I：

10.1016/j.poly.2010.10.017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The anionic cis-dioxovanadium(V) complex species LVO2- and L1VO2- of two tridentate ONO ligands (H2L and H2L1) can bind alkali metal ions in a bis-monodentate fashion like a bridging carboxylate group. Here H2L (N'-[(E)-(2-hydroxyphenyl)methylidene]-3-methyl-1H-pyrazole-5-carbohydrazide) and H2L1 (N'-[(1E)-1-(2-hydroxyphenyl) ethylidene]-3-methyl-1H-pyrazole-5-carbohydrazide) are Schiff base ligands generated by the condensation of 5-methyl 3-pyrazole carbohydrazide with salicylaldehyde and o-hydroxy acetophenone. The six products thus obtained are water soluble polymeric compounds in which the complementary units are held together by the simultaneous use of hydrogen bonding and coulombic interactions. [L1VO2Li(H2O)(2)](infinity) (2), [LVO2Na(H2O)(2)](infinity) (3) and [LVO2K(H2O)(2)](infinity) (5) have been crystallographically characterized. Crystallographic characterization reveals that 2 and 3 are polymeric helicates and 5 is a polymeric cluster with L1VO2- or LVO2- units bridging the labile alkali metal ions which occupy positions on the axis of the polymeric chain. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：187 / 194

页数：8

共 1 条

[1] Overlapping Double Turn Conformations Adopted by Tetrapeptides Containing Non-Coded α-Amino Isobutyric Acid (AIB) and Formation of Tape-Like Structures Through Supramolecular Helix Mediated Self-Assembly
Kar, Sudeshna
Dutta, Arpita
Drew, M. G. B.
Koley, Pradyot
Pramanik, Animesh
PROTEIN AND PEPTIDE LETTERS, 2009, 16 (09): : 1063 - 1073

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