A5055274269- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallography and molecular interactions
- Crystal structures of chemical compounds
- Porphyrin and Phthalocyanine Chemistry
Taras Shevchenko National University of Kyiv
2010-2020
Kyiv City Clinical Oncology Center
2015
The heterometallic complex [Co(4)Fe(2)OSae(8)]·4DMF·H(2)O (1) was synthesized by one-pot reaction of cobalt powder with iron chloride in a dimethylformamide solution salicylidene-2-ethanolamine (H(2)Sae) and characterized single crystal X-ray diffraction analysis, magnetic measurements, high frequency electron paramagnetic resonance (HF-EPR), Mössbauer spectroscopies. exchange coupling the Fe(III)-Fe(III) pair is antiferromagnetic behavior J/hc = -190 cm(-1). HF-EPR spectra reveal an unusual...
A one-pot reactions of cobalt powder with iron(II) chloride in dimethylformamide (DMF; 1) or dimethyl sulfoxide (DMSO; 2) solutions polydentate salicylaldimine Schiff base ligands (H(2)L(1), 1; H(4)L(2), based on 2-aminobenzyl alcohol (1) tris(hydroxymethyl)aminomethane (2), formed situ, yielded two novel heterometallic complexes, [Co(III)(2)Fe(III)(2)(L(1))(6)]·4DMF and [Co(III)(4)Fe(III)(4)(HL(2))(8)(DMSO)(2)]·18DMSO (2). Crystallographic investigations revealed that the molecular...
Two novel heterometallic complexes [Cu2Fe2(HL1)2(H2L1)2]·10DMSO (1) and [Cu2Fe2(HL2)2(H2L2)2]·2DMF (2) have been prepared using the open-air reaction of copper powder, iron(II) chloride DMSO or DMF solutions polydentate Schiff base (H4L1, 1; H4L2, 2) formed in situ from salicylaldehyde 5-bromo-salicylaldehyde tris(hydroxymethyl)aminomethane. Crystallographic analysis revealed that both compounds are based on centrosymmetric tetranuclear core {CuII2FeIII2(μ-O)6} where metal centres joined by...
A one-pot open-air reaction of manganese powder with iron(ii) chloride in DMF solution the Schiff base (H2L) formed situ from salicylaldehyde and hydroxylamine hydrochloride yields heterometallic complex [Fe4(μ4-O)4Mn4(L)8(DMF)4]·2DMF (). Single crystal X-ray analysis shows that its molecular structure is based on octanuclear core {Fe4Mn4(μ4-O)4(μ-O)4} a quite rare type {M8(μ4-X)4(μ-X)4}, where central cube-like iron motif modified four terminal fragments, whole being presented as...
A novel heterometallic Co6Fe6 Schiff base complex, possessing an unprecedented {M12(μ-X)22} branched structure (according to the search via Cambridge Structural Database), has been prepared using "direct synthesis" approach and characterized by single crystal X-ray diffraction magnetometry.
The title compound, [Co(C(10)H(8)N(2))(3)][Fe(C(2)O(4))(3)]·H(2)O, con-sists of two discrete tris-(chelate) metal ions (Co(III)N(6) and Fe(III)O(6) chromophores) a water mol-ecule. structure is highly symmetrical; the Co(III) Fe(III) occupy positions with site symmetry 3.2. coordination polyhedra atoms have nearly octa-hedral geometry noticeable trigonal distortions. Co-N Fe-O bond lengths are equal by symmetry, viz. 1.981 (2) 1.998 (4) Å, respectively. cations anions arranged alternately...
The title compound, [Mn(C(3)H(7)NO)(6)][Fe(2)Cl(6)O], was obtained unintentionally as a product of an attempted synthesis heterometallic complexes with Schiff base ligands using manganese powder and FeCl(3)·6H(2)O starting materials. In the [Fe(2)OCl(6)](2-) anion, O atom Fe occupy positions site symmetry [Formula: see text] 3, respectively, resulting in linear Fe-O-Fe angle staggered conformation. octa-hedrally surrounded cation (site text]) [Fe(2)Cl(6)O](2-) anion are alternately stacked...
In the centrosymmetric dimeric title complex, [Fe(2)(C(14)H(10)N(2)O(4))(2)Cl(2)(C(2)H(6)OS)(2)]·2C(2)H(6)OS, two {Fe(L)Cl(DMSO)} units (L is tridentate ligand 4-nitro-2-{[2-(oxidometh-yl)phen-yl]imino-meth-yl}phenolate; DMSO dimethyl sulfoxide) are bridged by O atoms, with an Fe⋯Fe separation of 3.1838 (8) Å. The coordination polyhedron Fe(III) atoms can be described as distorted octa-hedral, four Fe-O, one Fe-N and Fe-Cl bonds. L not planar, dihedral angle between...
The title cluster, [Cu4(C11H12N2O6)4], was obtained from the Cu(0)-FeCl2·4H2O-H4 L-Et3N-DMF reaction system (in air), where H4 L is 2-hy-droxy-methyl-2{[(2-hy-droxy-3-nitro-phen-yl)methyl-idene]amino}-propane-1,3-diol and DMF di-methyl-formamide. asymmetric unit consists of one Cu(2+) ion dianionic ligand; a -4 symmetry element generates which contains {Cu4O4} cubane-like core. metal has an elongated square-based pyramidal CuNO4 coordination geometry with N atom in basal site. An...
In the title compound, [NH(C(2)H(5))(3)][Fe(C(14)H(8)N(2)O(5))(2)]·H(2)O, iron(III) ion is hexa-coordinated by four O atoms in basal plane [Fe-O distances range 1.904 (4)-1.909 (4) Å] and two N axial [Fe-N = 1.981 1.985 of tridentate fully deprotonated 2-{[(2-oxido-5-nitro-phen-yl)methyl-ene]amino}-benzoato (H(2)L) ligands, forming a tetra-gonally elongated octa-hedral geometry. The triethyl-ammonium cations complex anions are linked N-H⋯O hydrogen bonds into chains parallel to [100]....