NDLI: Formation of amidine ligands in coordination spheres of Co$^{II}$ and Ni$^{II}$ atoms

Content Provider	Springer Nature Link
Author	Mikhailova, T. B. Pakhmutova, E. V. Malkov, A. E. Golovaneva, I. F. Sidorov, A. A. Fomina, I. G. Aleksandrov, G. G. Ikorskii, V. N. votortsev, V. M. Eremenko, I. L. Moiseev, I. I.
Copyright Year	2003
Abstract	Reactions of polynuclear cobalt and nickel pivalates with amines in MeCN afforded compounds containing the amidine ligands (MeC(NHR)=NH). The reactions with 2,6-diaminopyridine yielded the Ni(Me$_{3}$CCOO)$_{2}${H$_{2}$N(C$_{5}$H$_{3}$N)NHC(Me)=NH}, Co$_{2}$(Me$_{3}$CCOO)$_{4}${H$_{2}$N(C$_{5}$H$_{3}$N)NHC(Me)=NH}, Co(Me$_{3}$CCOO)$_{2}${H$_{2}$N(C$_{5}$H$_{3}$N)NHC(Me)=NH} complexes and the solvate of the latter with Me$_{3}$CCOH and C$_{6}$H$_{6}$. The reaction with S-(–)-α-methylbenzylamine gave rise to the ionic chiral compound with composition [PhCH(Me)NHC(Me)NH$_{2}$]$^{+}$[Co$_{2}$(Me$_{3}$CCOO)$_{5}$]$^{–}$ as a diastereomeric salt. According to the results of X-ray diffraction analysis, the asymmetric carbon atom in the cation and the asymmetric cobalt atom in the binuclear anion of this salt have the S absolute configuration. The compounds were characterized by elemental analysis data and the results of IR and electronic spectroscopy. Their structures were established by X-ray diffraction analysis. The chiroptical properties of the ionic compound in solution were studied by circular dichroism spectroscopy.
Starting Page	2105
Ending Page	2116
Page Count	12
File Format	PDF
ISSN	10665285
Journal	Russian Chemical Bulletin
Volume Number	52
Issue Number	10
e-ISSN	15739171
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Chemistry

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