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Rao AS, Pal A, Ghosh R, et al. Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution. Inorg Chem. 2009;48(5):1802-4doi: 10.1021/ic802171b.
Rao, A. S., Pal, A., Ghosh, R., & Das, S. K. (2009). Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution. Inorganic chemistry, 48(5), 1802-4. https://doi.org/10.1021/ic802171b
Rao, A Srinivasa, et al. "Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution." Inorganic chemistry vol. 48,5 (2009): 1802-4. doi: https://doi.org/10.1021/ic802171b
Rao AS, Pal A, Ghosh R, Das SK. Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution. Inorg Chem. 2009 Mar 02;48(5):1802-4. doi: 10.1021/ic802171b. PMID: 19235941.
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Inorg Chem. 2009 Mar 02;48(5):1802-4. doi: 10.1021/ic802171b.

Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution.

Inorganic chemistry

A Srinivasa Rao, Abhijit Pal, Rajarshi Ghosh, Samar K Das

Affiliations

  1. School of Chemistry, University of Hyderabad, Hyderabad 500 046, India, and Department of Chemistry, The University of Burdwan, Burdwan 713 104, India.

PMID: 19235941 DOI: 10.1021/ic802171b

Abstract

A neutral chiral mononuclear Ni(II) complex cis-[Ni(NCS)(2)(tren)] (1) [tren = tris(2-aminoethyl)amine] has been isolated in a reaction of nickel(II) salt with an achiral ligand tren and NH(4)SCN in a MeOH-H(2)O (1:1) mixture. The crystal structure of 1 reveals the encapsulation of Ni(II) ions in a facial {NiN(6)} coordination environment that includes four nitrogen donors from the tetradentate chelate tren and two nitrogen donors from two cis-NCS (monodentate) ligands. The chirality of 1 arises from symmetry breaking of the cis-(NCS)(2)-Ni(II) octahedral complex by the tetradentate chelate tren. Compound 1 exhibits both its enantiomers in a DMF solution through a Pfeiffer effect when l- and d-arabinose are used as environment substances. The particular synthesis, described herein, offers total spontaneous resolution, as is evidenced from crystal structure and circular dichroism spectral studies.

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