Journal of the Chemical Society, Dalton Transactions p. 379 - 384 (1992)
Update date:2022-07-30
Topics:
Kwiatkowski, Marek
Bandoli, Giuliano
The condensation fo N-acylated derivatives of o-aminocarbonyl aromatic compounds with the precursor 7-amino-4-methyl-5-azahept-3-en-2-one has been found to depend on the acidity of the amide proton and the nature of the substituent on the carbonyl carbon atom.Three new quadridentate Schiff-base ligands and their nickel(II) complexes having a pendant N-acetyl or N-trifluoroacetyl group have been obtained and characterized by spectroscopic techniques.A very unusual temperature-dependent proton NMR spectrum has been found for <4-methyl-9-(o-trifluoroacetylaminophenyl)-5,8-diazadeca-3,8-dien-2-onato(2-)>nickel(II) indicating a substantial energy barrier for enantiomer interconversion of the chiral complex molecule at moderate temperature.The crystal and molecular structure of this complex has been determined and shows that a fluorine-nickel interaction may be responsible for the inhibited enantiomer interconversion in N-trifluoroacetyl substituted nickel complexes.Crystallographic data: space group P21/c, a = 9.057(2), b = 13.769(4), c = 14.664(4) Angstroem, β = 108.43(2) deg, final R = 0.0434.
View MoreJinzhou Jiutai Pharmaceutical Co.,Ltd
Contact:+86-0416-5179890
Address:No.41, Taianli, Taihe District, Jinzhou, Liaoning
Huzhou City Linghu Xinwang Chemical Co.,Ltd.
Contact:86-572-3948695/3945236
Address:huzhou
Shanghai Yuanding Chem. Sci. & Tech. Co., Ltd.
website:http://www.shydtec.com
Contact:86-21-57721279
Address:Science and Technology Park, Songjiang District, Shanghai, China
taizhou creating bio-pharm co.,ltd.
Contact:+86- 576- 88827176
Address:715 room ,unit A.junyue Building,Jiaojiang,Taizhou,Zhejiang,China
Shijiazhuang Haotian Chemical Co., Ltd.
Contact:86-311-85044374
Address:293 Donggang Road
Doi:10.1016/j.bmc.2012.08.031
(2012)Doi:10.1016/j.bmcl.2012.09.029
(2012)Doi:10.1021/jm301188x
(2012)Doi:10.1134/S1070428012090229
()Doi:10.1016/j.tetlet.2009.10.112
(2010)Doi:10.1016/0022-328X(92)80003-G
(1992)
