Crystal structures of transition metal complexes with an asymmetrical tridentate Schiff-base ligand

Bei Bei Tang; Xiao Ping Sun; Gui Lei Liu; Hui Li

doi:10.1016/j.molstruc.2010.09.014

Crystal structures of transition metal complexes with an asymmetrical tridentate Schiff-base ligand

Bei Bei Tang, Xiao Ping Sun, Gui Lei Liu, Hui Li^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The asymmetrical tridentate Schiff base (H₂L = (E)-N′-(2-hydroxybenzylidene)-4-hydroxybenzohydrazide) has been designed and synthesized. The four transition metal complexes with this ligand [Cu(HL)(NO₃)](H₂O) (1), [Zn₂(HL) ₂(bipy)(H₂O)₂](NO₃)₂ (2), [Cu(HL)(H₂O)]₂(NO₃)₂ (3) and [Cu(HL)(Me₂NCO)]₂ (4) have been studied. The unsaturated coordination site of metal ion in complexes 1 and 2 is occupied by secondary ligand of nitrate and 4,4′-bipyridine. The crystal structure of complex 1 exhibits supramolecular framework with homochirality. Complexes 3 and 4 are dinuclear complexes bridged by the phenol oxygen atoms and the fifth coordination is occupied by H₂O molecular and DMF anion respectively. Hydrogen bonding and π-π stacking exist in all four complexes to construct supramolecular architecture.

Original language	English
Pages (from-to)	111-116
Number of pages	6
Journal	Journal of Molecular Structure
Volume	984
Issue number	1-3
DOIs	https://doi.org/10.1016/j.molstruc.2010.09.014
Publication status	Published - 15 Dec 2010

Keywords

Asymmetrical Schiff-base ligand
Homochiral
Hydrogen bonding
Tridentate ligand

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10.1016/j.molstruc.2010.09.014

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title = "Crystal structures of transition metal complexes with an asymmetrical tridentate Schiff-base ligand",

abstract = "The asymmetrical tridentate Schiff base (H2L = (E)-N′-(2-hydroxybenzylidene)-4-hydroxybenzohydrazide) has been designed and synthesized. The four transition metal complexes with this ligand [Cu(HL)(NO3)](H2O) (1), [Zn2(HL) 2(bipy)(H2O)2](NO3)2 (2), [Cu(HL)(H2O)]2(NO3)2 (3) and [Cu(HL)(Me2NCO)]2 (4) have been studied. The unsaturated coordination site of metal ion in complexes 1 and 2 is occupied by secondary ligand of nitrate and 4,4′-bipyridine. The crystal structure of complex 1 exhibits supramolecular framework with homochirality. Complexes 3 and 4 are dinuclear complexes bridged by the phenol oxygen atoms and the fifth coordination is occupied by H2O molecular and DMF anion respectively. Hydrogen bonding and π-π stacking exist in all four complexes to construct supramolecular architecture.",

keywords = "Asymmetrical Schiff-base ligand, Homochiral, Hydrogen bonding, Tridentate ligand",

author = "Tang, {Bei Bei} and Sun, {Xiao Ping} and Liu, {Gui Lei} and Hui Li",

year = "2010",

month = dec,

day = "15",

doi = "10.1016/j.molstruc.2010.09.014",

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volume = "984",

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journal = "Journal of Molecular Structure",

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T1 - Crystal structures of transition metal complexes with an asymmetrical tridentate Schiff-base ligand

AU - Tang, Bei Bei

AU - Sun, Xiao Ping

AU - Liu, Gui Lei

AU - Li, Hui

PY - 2010/12/15

Y1 - 2010/12/15

N2 - The asymmetrical tridentate Schiff base (H2L = (E)-N′-(2-hydroxybenzylidene)-4-hydroxybenzohydrazide) has been designed and synthesized. The four transition metal complexes with this ligand [Cu(HL)(NO3)](H2O) (1), [Zn2(HL) 2(bipy)(H2O)2](NO3)2 (2), [Cu(HL)(H2O)]2(NO3)2 (3) and [Cu(HL)(Me2NCO)]2 (4) have been studied. The unsaturated coordination site of metal ion in complexes 1 and 2 is occupied by secondary ligand of nitrate and 4,4′-bipyridine. The crystal structure of complex 1 exhibits supramolecular framework with homochirality. Complexes 3 and 4 are dinuclear complexes bridged by the phenol oxygen atoms and the fifth coordination is occupied by H2O molecular and DMF anion respectively. Hydrogen bonding and π-π stacking exist in all four complexes to construct supramolecular architecture.

AB - The asymmetrical tridentate Schiff base (H2L = (E)-N′-(2-hydroxybenzylidene)-4-hydroxybenzohydrazide) has been designed and synthesized. The four transition metal complexes with this ligand [Cu(HL)(NO3)](H2O) (1), [Zn2(HL) 2(bipy)(H2O)2](NO3)2 (2), [Cu(HL)(H2O)]2(NO3)2 (3) and [Cu(HL)(Me2NCO)]2 (4) have been studied. The unsaturated coordination site of metal ion in complexes 1 and 2 is occupied by secondary ligand of nitrate and 4,4′-bipyridine. The crystal structure of complex 1 exhibits supramolecular framework with homochirality. Complexes 3 and 4 are dinuclear complexes bridged by the phenol oxygen atoms and the fifth coordination is occupied by H2O molecular and DMF anion respectively. Hydrogen bonding and π-π stacking exist in all four complexes to construct supramolecular architecture.

KW - Asymmetrical Schiff-base ligand

KW - Homochiral

KW - Hydrogen bonding

KW - Tridentate ligand

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DO - 10.1016/j.molstruc.2010.09.014

M3 - Article

AN - SCOPUS:78649319181

SN - 0022-2860

VL - 984

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EP - 116

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

IS - 1-3

ER -

Crystal structures of transition metal complexes with an asymmetrical tridentate Schiff-base ligand

Abstract

Keywords

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