Srinivasa Rao, A. ; Pal, Abhijit ; Ghosh, Rajarshi ; Das, Samar K. (2009) Chiral synthesis of a mononuclear nickel(II) complex formed from an achiral tripodal amine ligand: spontaneous resolution Inorganic Chemistry, 48 (5). pp. 1802-1804. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic802171b
Related URL: http://dx.doi.org/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 NH4SCN in a MeOH-H2O (1:1) mixture. The crystal structure of 1 reveals the encapsulation of Ni(II) ions in a facial {NiN6} 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 63396 |
| Deposited On: | 29 Sep 2011 04:31 |
| Last Modified: | 29 Sep 2011 04:31 |
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