Synthesis, structures and fluorescence of nickel, zinc and cadmium complexes with the N,N,O-tridentate Schiff base N-2-pyridylmethylidene-2-hydroxy-phenylamine

Arpi Majumder; Georgina M. Rosair; Arabinda Mallick; Nitin Chattopadhyay; Samiran Mitra

doi:10.1016/j.poly.2005.11.029

Synthesis, structures and fluorescence of nickel, zinc and cadmium complexes with the N,N,O-tridentate Schiff base N-2-pyridylmethylidene-2-hydroxy-phenylamine

Arpi Majumder, Georgina M. Rosair, Arabinda Mallick, Nitin Chattopadhyay, Samiran Mitra

School of Engineering & Physical Sciences

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

316 Citations (Scopus)

Abstract

Mono-, tri- and dinuclear neutral complexes [Ni(HL)(L)] · (ClO₄) · 0.16(H₂O) (1), [ZnLZn(OOCCH₃)₄ZnL] (2) and [Cd₂L₂(OCH₃CO)₂(H₂ O)₂] (3) have been obtained from the reaction between the potentially tridentate N,N,O-donor Schiff base ligand HL, where HL = N-2-pyridylmethylidene-2-hydroxy-phenylamine with nickel, zinc or cadmium salts, respectively. The ligand has been prepared by 1:1 condensation of pyridine-2-carboxaldehyde and 2-aminophenol. The ligand and metal complexes were characterised by elemental analysis, spectroscopic studies such as IR, UV-Vis, ¹H NMR, fluorescence, electrochemical and magnetic susceptibility measurement. The structures of the three complexes have been determined by single-crystal X-ray diffraction. The nickel ions in 1 show a distorted mer-octahedral geometry. In 2, the terminal zinc ions have coordination geometry midway between square pyramidal and trigonal bipyramidal, whilst the central zinc ion has slightly distorted octahedral geometry. The trinuclear unit is held together by bridging deprotonated phenolic oxygen atoms from the Schiff base and acetate groups. In 3, two monocapped-octahedron cadmium ions are held together by µ₂-diphenoxo bridges. Among the three synthesised complexes, 1 is nonfluorescent while the other two can serve as potential photoactive materials as indicated from their characteristic fluorescence properties. © 2005 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1753-1762
Number of pages	10
Journal	Polyhedron
Volume	25
Issue number	8
DOIs	https://doi.org/10.1016/j.poly.2005.11.029
Publication status	Published - 29 May 2006

Keywords

μ 2 -Diphenoxo bridged complexes
Crystal structures
Dinuclear heptadentate Cd(II)
Fluorescence
Mononuclear Ni(II)
Tridentate Schiff base ligand
Trinuclear Zn(II)

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@article{0580c3077a814556aa341b73aaf05213,

title = "Synthesis, structures and fluorescence of nickel, zinc and cadmium complexes with the N,N,O-tridentate Schiff base N-2-pyridylmethylidene-2-hydroxy-phenylamine",

abstract = "Mono-, tri- and dinuclear neutral complexes [Ni(HL)(L)] · (ClO4) · 0.16(H2O) (1), [ZnLZn(OOCCH3)4ZnL] (2) and [Cd2L2(OCH3CO)2(H2 O)2] (3) have been obtained from the reaction between the potentially tridentate N,N,O-donor Schiff base ligand HL, where HL = N-2-pyridylmethylidene-2-hydroxy-phenylamine with nickel, zinc or cadmium salts, respectively. The ligand has been prepared by 1:1 condensation of pyridine-2-carboxaldehyde and 2-aminophenol. The ligand and metal complexes were characterised by elemental analysis, spectroscopic studies such as IR, UV-Vis, 1H NMR, fluorescence, electrochemical and magnetic susceptibility measurement. The structures of the three complexes have been determined by single-crystal X-ray diffraction. The nickel ions in 1 show a distorted mer-octahedral geometry. In 2, the terminal zinc ions have coordination geometry midway between square pyramidal and trigonal bipyramidal, whilst the central zinc ion has slightly distorted octahedral geometry. The trinuclear unit is held together by bridging deprotonated phenolic oxygen atoms from the Schiff base and acetate groups. In 3, two monocapped-octahedron cadmium ions are held together by µ2-diphenoxo bridges. Among the three synthesised complexes, 1 is nonfluorescent while the other two can serve as potential photoactive materials as indicated from their characteristic fluorescence properties. {\textcopyright} 2005 Elsevier Ltd. All rights reserved.",

keywords = "μ 2 -Diphenoxo bridged complexes, Crystal structures, Dinuclear heptadentate Cd(II), Fluorescence, Mononuclear Ni(II), Tridentate Schiff base ligand, Trinuclear Zn(II)",

author = "Arpi Majumder and Rosair, {Georgina M.} and Arabinda Mallick and Nitin Chattopadhyay and Samiran Mitra",

year = "2006",

month = may,

day = "29",

doi = "10.1016/j.poly.2005.11.029",

language = "English",

volume = "25",

pages = "1753--1762",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Limited",

number = "8",

}

Synthesis, structures and fluorescence of nickel, zinc and cadmium complexes with the N,N,O-tridentate Schiff base N-2-pyridylmethylidene-2-hydroxy-phenylamine. / Majumder, Arpi; Rosair, Georgina M.; Mallick, Arabinda; Chattopadhyay, Nitin; Mitra, Samiran.

In: Polyhedron, Vol. 25, No. 8, 29.05.2006, p. 1753-1762.

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

TY - JOUR

T1 - Synthesis, structures and fluorescence of nickel, zinc and cadmium complexes with the N,N,O-tridentate Schiff base N-2-pyridylmethylidene-2-hydroxy-phenylamine

AU - Majumder, Arpi

AU - Rosair, Georgina M.

AU - Mallick, Arabinda

AU - Chattopadhyay, Nitin

AU - Mitra, Samiran

PY - 2006/5/29

Y1 - 2006/5/29

N2 - Mono-, tri- and dinuclear neutral complexes [Ni(HL)(L)] · (ClO4) · 0.16(H2O) (1), [ZnLZn(OOCCH3)4ZnL] (2) and [Cd2L2(OCH3CO)2(H2 O)2] (3) have been obtained from the reaction between the potentially tridentate N,N,O-donor Schiff base ligand HL, where HL = N-2-pyridylmethylidene-2-hydroxy-phenylamine with nickel, zinc or cadmium salts, respectively. The ligand has been prepared by 1:1 condensation of pyridine-2-carboxaldehyde and 2-aminophenol. The ligand and metal complexes were characterised by elemental analysis, spectroscopic studies such as IR, UV-Vis, 1H NMR, fluorescence, electrochemical and magnetic susceptibility measurement. The structures of the three complexes have been determined by single-crystal X-ray diffraction. The nickel ions in 1 show a distorted mer-octahedral geometry. In 2, the terminal zinc ions have coordination geometry midway between square pyramidal and trigonal bipyramidal, whilst the central zinc ion has slightly distorted octahedral geometry. The trinuclear unit is held together by bridging deprotonated phenolic oxygen atoms from the Schiff base and acetate groups. In 3, two monocapped-octahedron cadmium ions are held together by µ2-diphenoxo bridges. Among the three synthesised complexes, 1 is nonfluorescent while the other two can serve as potential photoactive materials as indicated from their characteristic fluorescence properties. © 2005 Elsevier Ltd. All rights reserved.

AB - Mono-, tri- and dinuclear neutral complexes [Ni(HL)(L)] · (ClO4) · 0.16(H2O) (1), [ZnLZn(OOCCH3)4ZnL] (2) and [Cd2L2(OCH3CO)2(H2 O)2] (3) have been obtained from the reaction between the potentially tridentate N,N,O-donor Schiff base ligand HL, where HL = N-2-pyridylmethylidene-2-hydroxy-phenylamine with nickel, zinc or cadmium salts, respectively. The ligand has been prepared by 1:1 condensation of pyridine-2-carboxaldehyde and 2-aminophenol. The ligand and metal complexes were characterised by elemental analysis, spectroscopic studies such as IR, UV-Vis, 1H NMR, fluorescence, electrochemical and magnetic susceptibility measurement. The structures of the three complexes have been determined by single-crystal X-ray diffraction. The nickel ions in 1 show a distorted mer-octahedral geometry. In 2, the terminal zinc ions have coordination geometry midway between square pyramidal and trigonal bipyramidal, whilst the central zinc ion has slightly distorted octahedral geometry. The trinuclear unit is held together by bridging deprotonated phenolic oxygen atoms from the Schiff base and acetate groups. In 3, two monocapped-octahedron cadmium ions are held together by µ2-diphenoxo bridges. Among the three synthesised complexes, 1 is nonfluorescent while the other two can serve as potential photoactive materials as indicated from their characteristic fluorescence properties. © 2005 Elsevier Ltd. All rights reserved.

KW - μ 2 -Diphenoxo bridged complexes

KW - Crystal structures

KW - Dinuclear heptadentate Cd(II)

KW - Fluorescence

KW - Mononuclear Ni(II)

KW - Tridentate Schiff base ligand

KW - Trinuclear Zn(II)

U2 - 10.1016/j.poly.2005.11.029

DO - 10.1016/j.poly.2005.11.029

M3 - Article

VL - 25

SP - 1753

EP - 1762

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

IS - 8

ER -