Copper(II) complexes with neutral Schiff bases: Syntheses, crystal structures and DNA interactions

Abhijit Pal; Bhaskar Biswas; Sunil Kanti Mondal; Chia Her Lin; Rajarshi Ghosh

doi:10.1016/j.poly.2011.10.037

Copper(II) complexes with neutral Schiff bases: Syntheses, crystal structures and DNA interactions

Abhijit Pal, Bhaskar Biswas, Sunil Kanti Mondal, Chia Her Lin, Rajarshi Ghosh^*

^*Corresponding author for this work

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

54 Citations (Scopus)

Abstract

The synthesis and X-ray structural characterisation of a new Cu(II) complex, [Cu(L¹)Cl](ClO₄)·CH₃OH (1) [L¹ = N,N′-bis((pyridine-2-yl)phenylidene)-1,3-diaminopropan-2- ol], has been described in this work. The structural study reveals that the Cu(II) centre in 1 has a square pyramidal geometry with a trigonality index τ = 0.43, being coordinated by the organic ligand and a chloro group. The interaction of complex 1 and another complex previously reported by our group, [Cu(L²)](ClO₄)₂ (2) [L² = N-(1-pyridin-2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-ylphenylidene) amino]ethyl}amino)ethyl]ethane-1,2diamine], with calf thymus DNA (CT-DNA) has been investigated using absorption and emission spectral studies. The binding constant (K_b) and the linear Stern-Volmer quenching constant (K _sv) have been determined.

Original language	English
Pages (from-to)	671-675
Number of pages	5
Journal	Polyhedron
Volume	31
Issue number	1
DOIs	https://doi.org/10.1016/j.poly.2011.10.037
Publication status	Published - 2012 Jan 4
Externally published	Yes

Keywords

Copper(II)
DNA interactions
Fluorimetry
Schiff bases
Spectrophotometry

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2011.10.037

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title = "Copper(II) complexes with neutral Schiff bases: Syntheses, crystal structures and DNA interactions",

abstract = "The synthesis and X-ray structural characterisation of a new Cu(II) complex, [Cu(L1)Cl](ClO4)·CH3OH (1) [L1 = N,N′-bis((pyridine-2-yl)phenylidene)-1,3-diaminopropan-2- ol], has been described in this work. The structural study reveals that the Cu(II) centre in 1 has a square pyramidal geometry with a trigonality index τ = 0.43, being coordinated by the organic ligand and a chloro group. The interaction of complex 1 and another complex previously reported by our group, [Cu(L2)](ClO4)2 (2) [L2 = N-(1-pyridin-2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-ylphenylidene) amino]ethyl}amino)ethyl]ethane-1,2diamine], with calf thymus DNA (CT-DNA) has been investigated using absorption and emission spectral studies. The binding constant (Kb) and the linear Stern-Volmer quenching constant (K sv) have been determined.",

keywords = "Copper(II), DNA interactions, Fluorimetry, Schiff bases, Spectrophotometry",

author = "Abhijit Pal and Bhaskar Biswas and Mondal, {Sunil Kanti} and Lin, {Chia Her} and Rajarshi Ghosh",

note = "Funding Information: Financial support by the Department of Science and Technology, New Delhi, India (F. No. SR/FT/CS-83/2010 dt. 11-02-2011) is gratefully acknowledged by RG. ",

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T1 - Copper(II) complexes with neutral Schiff bases

T2 - Syntheses, crystal structures and DNA interactions

AU - Pal, Abhijit

AU - Biswas, Bhaskar

AU - Mondal, Sunil Kanti

AU - Lin, Chia Her

AU - Ghosh, Rajarshi

N1 - Funding Information: Financial support by the Department of Science and Technology, New Delhi, India (F. No. SR/FT/CS-83/2010 dt. 11-02-2011) is gratefully acknowledged by RG.

PY - 2012/1/4

Y1 - 2012/1/4

N2 - The synthesis and X-ray structural characterisation of a new Cu(II) complex, [Cu(L1)Cl](ClO4)·CH3OH (1) [L1 = N,N′-bis((pyridine-2-yl)phenylidene)-1,3-diaminopropan-2- ol], has been described in this work. The structural study reveals that the Cu(II) centre in 1 has a square pyramidal geometry with a trigonality index τ = 0.43, being coordinated by the organic ligand and a chloro group. The interaction of complex 1 and another complex previously reported by our group, [Cu(L2)](ClO4)2 (2) [L2 = N-(1-pyridin-2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-ylphenylidene) amino]ethyl}amino)ethyl]ethane-1,2diamine], with calf thymus DNA (CT-DNA) has been investigated using absorption and emission spectral studies. The binding constant (Kb) and the linear Stern-Volmer quenching constant (K sv) have been determined.

AB - The synthesis and X-ray structural characterisation of a new Cu(II) complex, [Cu(L1)Cl](ClO4)·CH3OH (1) [L1 = N,N′-bis((pyridine-2-yl)phenylidene)-1,3-diaminopropan-2- ol], has been described in this work. The structural study reveals that the Cu(II) centre in 1 has a square pyramidal geometry with a trigonality index τ = 0.43, being coordinated by the organic ligand and a chloro group. The interaction of complex 1 and another complex previously reported by our group, [Cu(L2)](ClO4)2 (2) [L2 = N-(1-pyridin-2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-ylphenylidene) amino]ethyl}amino)ethyl]ethane-1,2diamine], with calf thymus DNA (CT-DNA) has been investigated using absorption and emission spectral studies. The binding constant (Kb) and the linear Stern-Volmer quenching constant (K sv) have been determined.

KW - Copper(II)

KW - DNA interactions

KW - Fluorimetry

KW - Schiff bases

KW - Spectrophotometry

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Copper(II) complexes with neutral Schiff bases: Syntheses, crystal structures and DNA interactions

Abstract

Keywords

ASJC Scopus subject areas

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