Nickel(II) complexes having Imidazol-2-ylidene-N′-phenylurea ligand in the coordination sphere - Syntheses and solid state structures

Naktode, K and Kundu, A and Nayek, H P and Panda, Tarun K (2015) Nickel(II) complexes having Imidazol-2-ylidene-N′-phenylurea ligand in the coordination sphere - Syntheses and solid state structures. Journal of Chemical Sciences, 127 (8). pp. 1397-1404. ISSN 0974-3626

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Abstract

We report the syntheses and structural studies of two nickel(II) complexes of imidazol-2-ylidene- N′-phenylureate ligand of composition [{Im tBuNCON(H)Ph}2Ni(acac)2](1) and [(C6H5NH2)2Ni(acac)2][ImMes NCON(H)Ph] (2). The nickel complex 1 was readily prepared by the reaction of nickel(II) acetylacetonate [Ni(acac)2] with imidazol-2-ylidene-N′-phenylureate ligand [Im tBuNCON(H)Ph] (L1) in THF under reflux condition for 72 h. The nickel complex 2 was obtained by the reaction of [Ni(acac)2], mesityl derivative of imidazol-2-ylidene-N′-phenylureate ligand [Im MesNCON(H)Ph] (L2) in the presence of aniline as base under reflux condition in THF. Both the paramagnetic complexes have been characterized by FT-IR spectroscopy and elemental analyses. Solid-state structures of both the new complexes were established by single crystal X-ray diffraction analysis. In the molecular structures of complexes 1 and 2, each nickel(II) ion is six fold coordinated and form a distorted octahedral geometry. The optical properties of both complexes have been explored. The Hirshfeld surfaces are used to view and analyze the intermolecular contacts in crystalline state for complex 2.

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IITH Creators:
IITH CreatorsORCiD
Panda, Tarun Khttp://orcid.org/0000-0003-0975-0118
Item Type: Article
Uncontrolled Keywords: chelating ligands; hexa-coordination; hydrogen bonding; imidazol-2-ylidene-N′-phenylurea; Nickel(II)
Subjects: Chemistry > Organic chemistry
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Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 12 Nov 2015 07:45
Last Modified: 07 Sep 2017 11:02
URI: http://raiithold.iith.ac.in/id/eprint/2017
Publisher URL: http://dx.doi.org/10.1007/s12039-015-0907-x
OA policy: http://www.sherpa.ac.uk/romeo/issn/0974-3626/
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