Synthesis, crystal structure and magnetic properties of a new ferromagnetic nickel(II) dimer derived from a hexadentate Schiff base ligand

Soma Deoghoria; Sushama Sain; Monica Soler; Wing Tak Wong; George Christou; Sujit K. Bera; Swapan K. Chandra

doi:10.1016/S0277-5387(02)01336-0

Synthesis, crystal structure and magnetic properties of a new ferromagnetic nickel(II) dimer derived from a hexadentate Schiff base ligand

Soma Deoghoria, Sushama Sain, Monica Soler, Wing Tak Wong, George Christou, Sujit K. Bera, Swapan K. Chandra

Research output: Journal article publication › Journal article › Academic research › peer-review

35 Citations (Scopus)

Abstract

A new end-on bis(μ-azido) nickel(II) complex of the formula [Ni2(L1)(N3)4] (1) (L1= hexadentate Schiff base ligand made from the reaction of 2 moles of 2-benzoyl pyridine and 1 mole of triethylenetetramine) has been prepared and characterized by single crystal X-ray diffraction studies. Each nickel center is coordinated in a distorted octahedral (NiN6) fashion consisting of three nitrogen atoms from the hexadentate ligand moiety, two nitrogen atoms from two end-on azido ligands and the last one from another terminal azido ion. The variable temperature magnetic susceptibility of compound 1 shows that the nickel centers are ferromagnetically coupled. The Ni-N-Ni bridge angles are very similar [98.36(8)° and 97.66(9)°] and the Ni···Ni separation is 3.155(1) Å. The magnetic exchange coupling constant J = 21.8 cm-1is consistent with the structure and the value has been compared with some similar reported compounds.

Original language	English
Pages (from-to)	257-262
Number of pages	6
Journal	Polyhedron
Volume	22
Issue number	2
DOIs	https://doi.org/10.1016/S0277-5387(02)01336-0
Publication status	Published - 15 Jan 2003
Externally published	Yes

Keywords

Binuclear nickel(II) complex
Crystal structure
End-on azido ligand complex
Hexadentate ligand
Magnetic properties
Terminal azido ion complex

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S0277-5387(02)01336-0

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title = "Synthesis, crystal structure and magnetic properties of a new ferromagnetic nickel(II) dimer derived from a hexadentate Schiff base ligand",

abstract = "A new end-on bis(μ-azido) nickel(II) complex of the formula [Ni2(L1)(N3)4] (1) (L1= hexadentate Schiff base ligand made from the reaction of 2 moles of 2-benzoyl pyridine and 1 mole of triethylenetetramine) has been prepared and characterized by single crystal X-ray diffraction studies. Each nickel center is coordinated in a distorted octahedral (NiN6) fashion consisting of three nitrogen atoms from the hexadentate ligand moiety, two nitrogen atoms from two end-on azido ligands and the last one from another terminal azido ion. The variable temperature magnetic susceptibility of compound 1 shows that the nickel centers are ferromagnetically coupled. The Ni-N-Ni bridge angles are very similar [98.36(8)° and 97.66(9)°] and the Ni···Ni separation is 3.155(1) {\AA}. The magnetic exchange coupling constant J = 21.8 cm-1is consistent with the structure and the value has been compared with some similar reported compounds.",

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T1 - Synthesis, crystal structure and magnetic properties of a new ferromagnetic nickel(II) dimer derived from a hexadentate Schiff base ligand

AU - Deoghoria, Soma

AU - Sain, Sushama

AU - Soler, Monica

AU - Wong, Wing Tak

AU - Christou, George

AU - Bera, Sujit K.

AU - Chandra, Swapan K.

PY - 2003/1/15

Y1 - 2003/1/15

N2 - A new end-on bis(μ-azido) nickel(II) complex of the formula [Ni2(L1)(N3)4] (1) (L1= hexadentate Schiff base ligand made from the reaction of 2 moles of 2-benzoyl pyridine and 1 mole of triethylenetetramine) has been prepared and characterized by single crystal X-ray diffraction studies. Each nickel center is coordinated in a distorted octahedral (NiN6) fashion consisting of three nitrogen atoms from the hexadentate ligand moiety, two nitrogen atoms from two end-on azido ligands and the last one from another terminal azido ion. The variable temperature magnetic susceptibility of compound 1 shows that the nickel centers are ferromagnetically coupled. The Ni-N-Ni bridge angles are very similar [98.36(8)° and 97.66(9)°] and the Ni···Ni separation is 3.155(1) Å. The magnetic exchange coupling constant J = 21.8 cm-1is consistent with the structure and the value has been compared with some similar reported compounds.

AB - A new end-on bis(μ-azido) nickel(II) complex of the formula [Ni2(L1)(N3)4] (1) (L1= hexadentate Schiff base ligand made from the reaction of 2 moles of 2-benzoyl pyridine and 1 mole of triethylenetetramine) has been prepared and characterized by single crystal X-ray diffraction studies. Each nickel center is coordinated in a distorted octahedral (NiN6) fashion consisting of three nitrogen atoms from the hexadentate ligand moiety, two nitrogen atoms from two end-on azido ligands and the last one from another terminal azido ion. The variable temperature magnetic susceptibility of compound 1 shows that the nickel centers are ferromagnetically coupled. The Ni-N-Ni bridge angles are very similar [98.36(8)° and 97.66(9)°] and the Ni···Ni separation is 3.155(1) Å. The magnetic exchange coupling constant J = 21.8 cm-1is consistent with the structure and the value has been compared with some similar reported compounds.

KW - Binuclear nickel(II) complex

KW - Crystal structure

KW - End-on azido ligand complex

KW - Hexadentate ligand

KW - Magnetic properties

KW - Terminal azido ion complex

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DO - 10.1016/S0277-5387(02)01336-0

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SN - 0277-5387

VL - 22

SP - 257

EP - 262

JO - Polyhedron

JF - Polyhedron

IS - 2

ER -

Synthesis, crystal structure and magnetic properties of a new ferromagnetic nickel(II) dimer derived from a hexadentate Schiff base ligand

Abstract

Keywords

ASJC Scopus subject areas

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