Synthesis and investigations of mixed-ligand lanthanide complexes with N,N′-dipyrrolidine-N′′-trichloracetylphosphortriamide, dimethyl-N-trichloracetylamidophosphate, 1,10-phenanthroline and 2,2′-bipyrimidine

Lanthanide mixed-ligand complexes of the [Ln(CAPh)3(Phen)] and [LaxEu1−x(CAPh)3(Phen)] (CAPh = carbacylamidophosphate) type. A comparative study of their spectral properties

“…28 The intensity of these bands is mostly influenced among all the f-f transitions due to the changes in the immediate surrounding of the Nd(III) ion, making it 25 particularly suitable for probing the coordination environment around the ion. 19,30 The spectra were measured at 293 K in the 220-850 nm range in a solid state and in diluted 35 (C=1·10 -2 M) chloroform solution as well ( Fig.3A and 3B respectively). 29 The electronic absorption spectra of the neodymium complex 30 [Nd(Pip) 3 (Phen)] (Fig.3) show the absorption features similar to those reported previously for the analogous coordination compounds having coordination number of the central atoms 8 with different CAPh ligands.…”

“…This fact also was confirmed for the deprotonated β-diketones structural analogues so-called sulfonylamidophosphates (SAPh). [17][18][19][20] Herein, we report not only traditional type of rare earth (RE) complexes [Ln(Pip) 3 (Phen)] (Ln = La, Ce-Nd, Sm-Lu, Y) synthesis and studies but also lanthanum doped by europium ones [La x Eu 1-x (Pip) 3 (Phen)] (x = 0.99, 0.95, 0.50). The N, P-substituted βdiketones, so-called carbacylamidophosphates (CAPh), were selected to explore the possibility of better characteristics of 20 lanthanide-centered luminescence of the complexes obtaining.…”

“…1B) implies that it could be resulted by an overlap of at least two bands at very close 30 frequencies. 19,25 The vibration bands of the 1,10-phenanthroline ligand in the IR spectra of the coordination compounds are either overlapped by the bands of the CAPh ligands and have low intensities. As it was already mentioned, the structures of 1, 2 and 3 revealed different geometrical parameters of coordinated carbacylamidophosphate chelate rings 35 within one molecule.…”

Synthesis, crystal structures and spectroscopic properties of cobalt(II) complexes with chelating sulfonylamidophosphate ligands

“…Having continuous interest in study of binuclear Ln III eLn III [7] and Ln III eM II complexes [8] (Ln ¼ lanthanide ion, M II ¼ 3d-metal ion) we undertook a study of potential building block for polynuclear species, viz. stable coordinationally unsaturated neutral moiety {Co II [(sulfonylamidophosphate) 2 } 0 able to bind additionally two bridging monodentate or one chelate ligand and complete coordination sphere of Co-ion up to six donor atoms.…”

Novel organotin(IV) complexes of organophosphorus ligands: Synthesis, spectroscopic, structural study and DFT calculations

“…Besides, they indicate other useful applications in coordination chemistry [7,8]. The structural studies have been performed to correlate their properties to the structural factors [9,10].…”