Mishra, Haritosh ; Mukherjee, Rabindra Nath (2010) [(η6-C6H6)RuII(L)(Cl/N3/CN/CH3CN)]+/2+ complexes of non-planar pyrazolylmethylpyridine ligands: formation of helices due to C-H···X (X = Cl, N) interaction Journal of Organometallic Chemistry, 695 (14). pp. 1753-1760. ISSN 0022-328X
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Official URL: http://dx.doi.org/10.1016/j.jorganchem.2010.03.022
Related URL: http://dx.doi.org/10.1016/j.jorganchem.2010.03.022
Abstract
Structural analysis of a previously reported half-sandwich complex having three-legged "piano-stool" geometry [(η6-C6H6)RuII(L1)Cl][PF6] (1) (L1 = 2-(pyrazol-1-ylmethyl)pyridine) is described. Treatment of 1 with (i) Ag(CF3SO3) in CH3CN and (ii) NaN3 in CH3OH, and (iii) the reaction between [(η6-C6H6)Ru(L2)Cl]-[PF6] (2) (previously reported) and NaCN in C2H5OH led to the isolation of [(η6-C6H6)Ru(L1)(CH3CN)][PF6]2 (3), [(η6-C6H6)Ru(L1)(N3)][PF6] (4), and [(η6-C6H6)Ru(L2)(CN)][PF6] (5), respectively (L2 = 2-(3,5-dimethyl-pyrazol-1-ylmethyl)pyridine). The complex [(η6-C6H6)Ru(L4)Cl][PF6] (6) with a new ligand (L4 = 2-[3-(4-fluorophenyl)pyrazol-1-ylmethyl]pyridine) has also been synthesized. The structures of 3-6 have been elucidated (1H NMR spectra; CD3CN). The molecular structures of 1, 4, and 6·C6H5CH3 have been determined. Notably, the crystal-packing in these structures is governed by C-H···X (X = Cl, N) interactions, generating helical architectures.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Benzene-coordinated Ru(II); Pyrazolylmethylpyridines; 1H NMR Spectra; Crystal Structure; Non-covalent Interaction; Helical Structure |
| ID Code: | 26016 |
| Deposited On: | 04 Dec 2010 10:39 |
| Last Modified: | 02 Mar 2011 08:55 |
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