title: Mononuclear anionic octahedral cobalt(III) complexes based on N-salicylidene-o-aminophenol and its derivatives: synthetic, structural and spectroscopic studies.
abstract: The reactions of Co(II) sources with N-salicylidene-o-aminophenol (H2saph), N-salicylidene-o-amino-4-methylphenol (H2saph-4Me) and N-salicylidene-o-amino-4-chlorophenol (H2saph-4Cl) were studied in MeOH. The new solid complexes (Bu4(n)N)[Co(III)(saph)2] (1), (Et3NH)[Co(III)(saph-4Me)2]⋅MeOH⋅MeCO2H (2⋅MeOH⋅MeCO2H) and (Et3NH)[Co(III)(saph-4Cl)2]⋅MeOH⋅MeCO2H (3⋅MeOH⋅MeCO2H) have been isolated and their structures determined by single-crystal, X-ray crystallography. The three compounds contain the mononuclear, low- spin octahedral anion [Co(III)L2](-) (H2L=H2saph, H2saph-4Me, H2saph-4Cl), in which both L(2)(-) ligands act as tridentate chelating, meridional ONO donors. The crystal structures of 2⋅MeOH⋅MeCO2H and 3⋅MeOH⋅MeCO2H are built through H-bonding and π-π stacking interactions. The new complexes were characterized by elemental analyses and spectroscopic (IR, Raman, UV/VIS, (1)H NMR) data. All data are discussed in terms of the nature of bonding and known structures.
authors: Department of Chemistry, University of Patras, GR-265 04 Patras, Greece.
authors: Konstantina I
authors: KI
authors: Alexopoulou
authors: Department of Chemistry, University of Patras, GR-265 04 Patras, Greece.
authors: Eirini
authors: E
authors: Zagoraiou
authors: Department of Chemistry, University of Patras, GR-265 04 Patras, Greece.
authors: Theodoros F
authors: TF
authors: Zafiropoulos
authors: Department of Materials Science, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR "Demokritos", GR-153 10 Aghia Paraskevi Attikis, Greece.
authors: Catherine P
authors: CP
authors: Raptopoulou
authors: Department of Materials Science, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR "Demokritos", GR-153 10 Aghia Paraskevi Attikis, Greece.
authors: Vassilis
authors: V
authors: Psycharis
authors: Department of Materials Science, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR "Demokritos", GR-153 10 Aghia Paraskevi Attikis, Greece. Electronic address: aterzis@ims.demokritos.gr.
authors: Aris
authors: A
authors: Terzis
authors: Department of Chemistry, University of Patras, GR-265 04 Patras, Greece. Electronic address: perlepes@patreas.upatras.gr.
authors: Spyros P
authors: SP
authors: Perlepes
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman
chemical_list: C582231:N-salicylidene-o-aminophenol; D009942:Organometallic Compounds; D010636:Phenols; D012545:Schiff Bases; D003035:Cobalt
keywords: Cobalt(III) complexes; N-salicylidene-o-aminophenol and its derivatives; Spectroscopic characterization; Tridentate Schiff-base ligands; X-ray structures