Irina Oliseveca

University of Latvia | LU · Institute of Chemical Physics

Porous anodic aluminum oxide (PAAO), sometimes referred to as nanoporous anodic alumina, serves as a cost-effective template for nanofabrication in many fields of science and engineering. However, production of ultrathin PAAO membranes with precise thickness in the optical sub-wavelength range remains challenging because of difficulties regarding p...

New cationic lanthanide(III) complexes with carbacylamidophosphate ligand of general formula [Ln(L)2(bipy)2]BPh4 (where Ln = Eu, Tb; L⁻=bis(N,N'-diethylamido)(N‘‘-trichloroacetyl)-triamidophosphate-ion; bipy = 2,2′′–bipyridine) were synthesized and characterized by means of elemental, X-Ray and thermal analyses, IR and luminescence spectroscopy. Ac...

The novel bis-chelating carbacylamidophosphate type ligand, tetramethyl[pyridine-2,6-diyldi(iminocarbonyl)]diamidophosphate (H2L), and its sodium salt, NaHL, have been synthesized and their structural properties have been investigated. Coordination compounds of lanthanides [Ln(HL)2NO3]·i-PrOH (Ln = Eu³⁺, Tb³⁺) were obtained for the first time, isol...

A new cationic mixed-ligand complex [Lа(L)2bipy2]BPh4 (where L-= bis(N,N'-diethylamide)(N'-trichloroacetyl)-triamidophosphate anion, bipy = 2,2'-bipyridine) has been synthesized and studied by the means of IR, 1H NMR spectroscopy, thermogravimetric and X-ray structural analyses. Low-frequency shifts of the absorption bands of the carbonyl and phosp...

A series of new anionic lanthanide(III) complexes with the general formula NEt4[LnL4] (1-Ln; HL = dimethyl[(4-methylphenyl)sulfonyl]amidophosphate; Ln = La, Nd, Eu), were synthesized and characterized by IR, UV-vis, and NMR spectroscopies, the differential scanning calorimetry method, thermogravimetric and X-ray analysis, and photoluminescence meas...

Novel anionic coordination compounds of lanthanides with sulfonylamidophosphate (SAPh) ligand of general formula Cs[LnL4] (Ln=La, Nd, Eu, Tb, L–=[C6H5(SO2)N(PO)(OCH3)2]) have been synthesized. The obtained complexes have been investigated by means of¹H NMR, IR, electronic spectroscopies and X-ray diffraction analysis. The compound Cs[NdL4] has been...

A new tripodal tris-chelating carbacylamidophosphate (CAPh) ligand (H3L = N(CH2CH2N(H)C(O)N(H)P(O)(OCH3)2)3) has been synthesized and a series of coordination compounds of general formula LnL (where Ln = La, Nd, Eu, Tb) based on this ligand has been obtained and isolated in the crystalline state. The resulting compounds have been investigated by th...

As a continuation of studies of carbacylamidophosphate based coordination compounds a series of the lanthanide and yttrium complexes of general formula PPh4[LnL4], where Ln=La, Nd, Tb and Y; L– = [CCl3(CO)N(PO)(OCH3)2]– has been synthesized. The resulting compounds were characterized by means of thermal gravimetric analysis, IR, 1H NMR, UV-Vis abso...