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Abstract:
Three manganese(III) complexes with the ligand bzacen2- [bzacen2- = N,N'-ethylenebis (1-phenyl-3-imino-1-butanonato)], Mn(bzacen) (pyridine)(NCS) (1), [Mn2(bzacen)2 (Me OH)2](ClO4)2 (2) and MnCl(bzacen) (3), have been synthesized and characterized by ER, Raman, electronic spectra and cyclic voltammetry. A structure determination of complexes 1 and 2 reveals a octahedral coordination with an N2O2 equatorial plane composed of atoms from the Schiff base ligand, while the Mn atom in complex 3 has square pyramidal coordination. The two MnN2O4 octahedra in complex 2 are joined by sharing two ketone oxygen atoms (Mn-O 1.910 and 2.493 Å) to form a dinuclear [Mn2(bzacen)2(MeOH)2]2+ cation, the Mn2O2 core having an Mn⋯Mn separation of 3.397 Å and Mn-O-Mn angles of 99.7○. In these three complexes vc=0 and vc=c are shifted to lower frequencies in IR and Raman spectra; π-π* transitions, d-π* charge-transfer transitions and d-d* ligand field transitions are observed in electronic spectra.
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Journal of Coordination Chemistry
ISSN: 0095-8972
Year: 1998
Issue: 1-2
Volume: 44
Page: 81-90
0 . 6 2 2
JCR@1998
2 . 2 0 0
JCR@2023
JCR Journal Grade:3
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WoS CC Cited Count: 0
SCOPUS Cited Count: 8
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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