FacebookTwitterGoogle Bookmarks

Journal of Molecular Structure, April 2014

Synthesis and structure of new mononuclear octahedral cobalt(III) dioximates derived from isonicotinic hydrazide

Intitulé de l'article Synthesis and structure of new mononuclear octahedral cobalt(III) dioximates derived from isonicotinic hydrazide
Revue Journal of Molecular Structure, Volume 1063
Date de publication 24 April 2014
Auteurs

Maria Cocu,

Ion Bulhac,

Eduard Coropceanu,

Elena Melnic,

Sergiu Shova,

Olga Ciobanica,

Victoria Gutium,

Paulina Bourosh.
Abstract

New organic ligand L resulting from isonicotinic hydrazide and 2,4-pentanedione has been prepared and investigated by physicochemical methods, including elemental analysis, 1H and 13C NMR, IR spectroscopy and X-ray studies.

The X-ray investigation revealed that the condensation of 2,4-pentanedione with isonicotinic hydrazide is accompanied by the formation of a five-membered ring including three carbon atoms of 2,4-pentanedione and two nitrogen atoms of the isonicotinic hydrazide fragment.

The reaction between [Co(DfgH)2Br(H2O)] (DfgH2 = diphenylglyoxime) and L resulted in the formation of the mononuclear octahedral complex [Co(DfgH)2BrL] with the substitution of the water molecule in the apical position by the ligand L. The reaction starting from [Co(DmgH)2Cl(H2O)] (DmgH = dimethylglyoxime) and L resulted in the mononuclear octahedral Co(III) complex with the composition [Co(DmgH)2ClL′] , where L′unexpectedly represents a dehydrated derivative of L. The two coordination compounds are characterized by X-ray diffraction method. The IR, 1H NMR spectral studies of new compounds are also reported.

Consulter 

Lien direct

Cet article vous interesse? Commandez-le !

Tél : 05 37 56 99 07 /04 / 00

Fax : 05 37 56 99 01

E-mail : Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Calendrier

Novembre 2018
Lun Mar Mer Jeu Ven Sam Dim
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

Newsletter