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Interaction of Palladium(II) Acetate with Substituted Pyridines, including a Cyclometallation Reaction and the Structure of [Pd{meso-[(py)PhMeC]2C5H3N}(02CMe)][02CMe].3H2O

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Canty, AJ and Minchin, NJ and Skelton, BW and White, AH (1986) Interaction of Palladium(II) Acetate with Substituted Pyridines, including a Cyclometallation Reaction and the Structure of [Pd{meso-[(py)PhMeC]2C5H3N}(02CMe)][02CMe].3H2O. Journal of the Chemical Society, Dalton Transactions, 10. pp. 2205-2210. ISSN 1477-9226

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Abstract

The reactivity of meso- and rac- diastereoisomers of 2,6-bis[l-phenyl-1-(pyridin-2-yl)ethyl]pyridine {[(py)PhMeC]2C5H3N}, 2,6-bis[l,l-bis(pyridin-2-yl)ethyl]pyridine {[(py)2MeC]2C5H3N}, and the pyridin-2-ylmethanes (py)2Ph3-nCH (n = 1-3), (py)nCH4-n, (n = 2 or 3), and (py)3PhC toward
palladium(II) acetate in refluxing glacial acetic acid and at ambient temperature in organic solvents has been investigated. The nitrogen donor ligands form co-ordination derivatives in organic solvents. All except alpha-phenyl-alpha-(pyridin-2-yl)toluene [(py)Ph2CH] form identical complexes in glacial acetic acid, with (py)Ph2CH undergoing cyclometallation to form [{Pd[(py)PhHCC6H4](mu-
O2CMe)}2]. meso-[(py)PhMeC]2C5H3N, which binds as a tripodal tridentate ligand to methylmercury(II), has been shown by a single crystal X-ray study to act as a planar tridentate ligand to palladium(II) in [Pd{meso-[(pyPhMeC]2C5H3N}(O2CMe)][O2CMe].3H2O with square-planar co-ordination being completed by a unidentate acetate group. Syntheses of the new ligand [(py)2MeC]2C5H3N, with five pyridine donor groups, and alpha,alpha,alpha-tris(pyridin-2-y1)toluene [(py)3PhC] are described.

Item Type: Article
Journal or Publication Title: Journal of the Chemical Society, Dalton Transactions
Page Range: pp. 2205-2210
ISSN: 1477-9226
Identification Number - DOI: 10.1039/DT9860002205
Date Deposited: 29 Jan 2008 02:51
Last Modified: 18 Nov 2014 03:27
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