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Abstract:
Three manganese(III) complexes with the ligand bzacen(2-) [bzacen(2-) = N,N'-ethylenebis (1-phenyl-3-imino-1-butanonato)], Mn(bzacen) (pyridine)(NCS) (1), [Mn-2(bzacen)(2) (Me OH)(2)](ClO4)(2) (2) and MnCl(bzacen) (3), have been synthesized and characterized by IR, 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 Angstrom) to form a dinuclear [Mn-2(bzacen)(2)(MeoH)(2)](2+) cation, the Mn,OZ core having an Mn Mn separation of 3.397 Angstrom and Mn-O-Mn angles of 99.7 degrees. In these three complexes v(C=O) and v(C=C) are shifted to lower frequencies in IR and Raman spectra; pi-pi* transitions, d-pi* 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
ESI Discipline: CHEMISTRY;
JCR Journal Grade:3
Cited Count:
WoS CC Cited Count: 8
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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