Complexes of 2,6_diacetylpyridine-di-(1R)_(-)_fenchone diazine (fench=NN=CMe)2C5H5N) ligand with molybdenum, tungsten or palladium

Mustaffa Ahmad

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Type :	Article
Subject :	Q Science
ISSN :	1985-7918
Main Author :	Mustaffa Ahmad
Additional Authors :	Illyas Md Isa Shaw, Bernard L. Perera, Sarath D.
Title :	Complexes of 2,6_diacetylpyridine-di-(1R)_(-)_fenchone diazine (fench=NN=CMe)2C5H5N) ligand with molybdenum, tungsten or palladium
Hits :	15

Place of Production :	Tanjong Malim
Publisher :	Fakulti Sains dan Matematik
Year of Publication :	2011
Notes :	Vol. 3 No. 1 (2011): Journal of Science and Mathematics
Corporate Name :	Perpustakaan Tuanku Bainun
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Abstract : Perpustakaan Tuanku Bainun

The Schiff_base ligand 2,6_diacetylpyridine_di_(1R)_(-)_fenchone diazine (9) was prepared by heating 2,6_diacetyl_pyridine (7) and fenchone hydrazone (8) in boiling ethanol in the presence of acetic acid as the catalyst for 28 h. Treatment of (9) with [Mo(CO)4(nbd)] or [W(CO)4(nbd)] in benzene at 80 0C gave the tetracarbonylmolybdenum(0) (10) or tetracarbonyltungsten(0) (11). The complexes (10) and (11) showed that the diazine (9) acted as a bidentate chelating ligand bonded through the pyridyl nitrogen and only one of the imino nitrogen donor atoms of the ligand involved in the bonding. However, diazine (9) acted as a planar terdentate N,N,N_donor_ligand when reacted with palladium(II) to give the cationic products of (12), (13) and (15), respectively. Keywords Molybdenum complexes, tungsten complexes, palladium complexes; bidentate- N,N ligand complexes, terdentate-N,N,N ligand complexes, fenchone azine ligand complexes

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