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

Arijit Hazra; Samik Gupta; Somnath Roy; Tarak Nath Mandal; Kinsuk Das; Saugata Konar; Atanu Jana; Sangita Ray; Ray J. Butcher; Susanta Kumar Kar

doi:10.1016/j.poly.2010.10.017

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

Arijit Hazra, Samik Gupta, Somnath Roy, Tarak Nath Mandal, Kinsuk Das, Saugata Konar, Atanu Jana, Sangita Ray, Ray J. Butcher, Susanta Kumar Kar

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Abstract

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 H ₂L (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] _∞ (2), [LVO₂Na(H₂O)₂] _∞ (3) and [LVO₂K(H₂O)₂] _∞ (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.

Original language	English
Pages (from-to)	187-194
Number of pages	8
Journal	Polyhedron
Volume	30
Issue number	1
DOIs	https://doi.org/10.1016/j.poly.2010.10.017
State	Published - 12 Jan 2011

Keywords

Heterocycle based ligands
Heterometallic coordination polymer
Schiff base ligand
V(V) complexes
X-ray crystallography

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Hazra, A., Gupta, S., Roy, S., Mandal, T. N., Das, K., Konar, S., Jana, A., Ray, S., Butcher, R. J., & Kar, S. K. (2011). 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. Polyhedron, 30(1), 187-194. https://doi.org/10.1016/j.poly.2010.10.017

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title = "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",

abstract = "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 H 2L (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] ∞ (2), [LVO2Na(H2O)2] ∞ (3) and [LVO2K(H2O)2] ∞ (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.",

keywords = "Heterocycle based ligands, Heterometallic coordination polymer, Schiff base ligand, V(V) complexes, X-ray crystallography",

author = "Arijit Hazra and Samik Gupta and Somnath Roy and Mandal, {Tarak Nath} and Kinsuk Das and Saugata Konar and Atanu Jana and Sangita Ray and Butcher, {Ray J.} and Kar, {Susanta Kumar}",

year = "2011",

month = jan,

day = "12",

doi = "10.1016/j.poly.2010.10.017",

language = "English",

volume = "30",

pages = "187--194",

journal = "Polyhedron",

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Hazra, A, Gupta, S, Roy, S, Mandal, TN, Das, K, Konar, S, Jana, A, Ray, S, Butcher, RJ & Kar, SK 2011, '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', Polyhedron, vol. 30, no. 1, pp. 187-194. https://doi.org/10.1016/j.poly.2010.10.017

TY - JOUR

T1 - 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

AU - Hazra, Arijit

AU - Gupta, Samik

AU - Roy, Somnath

AU - Mandal, Tarak Nath

AU - Das, Kinsuk

AU - Konar, Saugata

AU - Jana, Atanu

AU - Ray, Sangita

AU - Butcher, Ray J.

AU - Kar, Susanta Kumar

PY - 2011/1/12

Y1 - 2011/1/12

N2 - 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 H 2L (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] ∞ (2), [LVO2Na(H2O)2] ∞ (3) and [LVO2K(H2O)2] ∞ (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.

AB - 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 H 2L (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] ∞ (2), [LVO2Na(H2O)2] ∞ (3) and [LVO2K(H2O)2] ∞ (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.

KW - Heterocycle based ligands

KW - Heterometallic coordination polymer

KW - Schiff base ligand

KW - V(V) complexes

KW - X-ray crystallography

UR - http://www.scopus.com/inward/record.url?scp=78650801819&partnerID=8YFLogxK

U2 - 10.1016/j.poly.2010.10.017

DO - 10.1016/j.poly.2010.10.017

M3 - Article

AN - SCOPUS:78650801819

SN - 0277-5387

VL - 30

SP - 187

EP - 194

JO - Polyhedron

JF - Polyhedron

IS - 1

ER -

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

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