Two new mononuclear cobalt(II) complexes of pyrazole-based ligands: Synthesis, structures and magnetic studies

Abhimanyu Jana; Malay Dolai; Bikash Kumar Shaw; Shyamal Kumar Saha; Mahammad Ali

doi:10.1007/s11243-016-0029-4

Two new mononuclear cobalt(II) complexes of pyrazole-based ligands: Synthesis, structures and magnetic studies

Abhimanyu Jana
, Malay Dolai
, Bikash Kumar Shaw
, Shyamal Kumar Saha
, Mahammad Ali

Academy of Innovative Semiconductor and Sustainable Manufacturing

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

3 Citations (Scopus)

Abstract

We have synthesized two mononuclear cobalt(II) complexes (1 and 2) of pyrazole-based bidentate (NN) and tridentate (NNN) tripodal ligands. X-ray crystal structure determination reveals that complex 1 has a tetrahedral geometry, while complex 2 has a trigonal-bipyramidal geometry. Both the complexes have been characterized by variable-temperature magnetic measurements between 2 and 300 K. A weak ferromagnetic exchange interaction (J = +1.5 cm^-1) is observed for complex 2. Due to the presence of supramolecular CH···Cl and π···π interactions, a good magnetostructural correlation was found between the D parameter and angular distortion (δ) for complex 1 and related complexes reported in the literature.

Original language	English
Pages (from-to)	347-355
Number of pages	9
Journal	Transition Metal Chemistry
Volume	41
Issue number	3
DOIs	https://doi.org/10.1007/s11243-016-0029-4
Publication status	Published - 2016 Apr 1

All Science Journal Classification (ASJC) codes

Inorganic Chemistry
Metals and Alloys
Materials Chemistry

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title = "Two new mononuclear cobalt(II) complexes of pyrazole-based ligands: Synthesis, structures and magnetic studies",

abstract = "We have synthesized two mononuclear cobalt(II) complexes (1 and 2) of pyrazole-based bidentate (NN) and tridentate (NNN) tripodal ligands. X-ray crystal structure determination reveals that complex 1 has a tetrahedral geometry, while complex 2 has a trigonal-bipyramidal geometry. Both the complexes have been characterized by variable-temperature magnetic measurements between 2 and 300 K. A weak ferromagnetic exchange interaction (J = +1.5 cm-1) is observed for complex 2. Due to the presence of supramolecular CH···Cl and π···π interactions, a good magnetostructural correlation was found between the D parameter and angular distortion (δ) for complex 1 and related complexes reported in the literature.",

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T1 - Two new mononuclear cobalt(II) complexes of pyrazole-based ligands

T2 - Synthesis, structures and magnetic studies

AU - Jana, Abhimanyu

AU - Dolai, Malay

AU - Shaw, Bikash Kumar

AU - Saha, Shyamal Kumar

AU - Ali, Mahammad

PY - 2016/4/1

Y1 - 2016/4/1

N2 - We have synthesized two mononuclear cobalt(II) complexes (1 and 2) of pyrazole-based bidentate (NN) and tridentate (NNN) tripodal ligands. X-ray crystal structure determination reveals that complex 1 has a tetrahedral geometry, while complex 2 has a trigonal-bipyramidal geometry. Both the complexes have been characterized by variable-temperature magnetic measurements between 2 and 300 K. A weak ferromagnetic exchange interaction (J = +1.5 cm-1) is observed for complex 2. Due to the presence of supramolecular CH···Cl and π···π interactions, a good magnetostructural correlation was found between the D parameter and angular distortion (δ) for complex 1 and related complexes reported in the literature.

AB - We have synthesized two mononuclear cobalt(II) complexes (1 and 2) of pyrazole-based bidentate (NN) and tridentate (NNN) tripodal ligands. X-ray crystal structure determination reveals that complex 1 has a tetrahedral geometry, while complex 2 has a trigonal-bipyramidal geometry. Both the complexes have been characterized by variable-temperature magnetic measurements between 2 and 300 K. A weak ferromagnetic exchange interaction (J = +1.5 cm-1) is observed for complex 2. Due to the presence of supramolecular CH···Cl and π···π interactions, a good magnetostructural correlation was found between the D parameter and angular distortion (δ) for complex 1 and related complexes reported in the literature.

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JO - Transition Metal Chemistry

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Two new mononuclear cobalt(II) complexes of pyrazole-based ligands: Synthesis, structures and magnetic studies

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