Spectroscopic and magnetic properties of solvatochromic complex of Cu2+ and novel 3H-indolium derivative.
A new solvatochromic complex of copper (II) and 3H-indolium (HQIndol) with the formula (HQIndol)3Cu has been synthesised and characterised by elemental analysis, UV-vis, IR spectroscopies, electron paramagnetic resonance (EPR), and static magnetic susceptibility and conductance measurements. The stoichiometry of complex has been determined as 1:3 (M:L) and the binding constant was calculated to be 5.86×10(16) mol(-1) L at 25 °C in CH3OH. Magnetization measurements indicate that (HQIndol)3Cu sample is paramagnetic with spin S=1/2 for which phase transition from paramagnetic to antiferromagnetic has been registered at TN=2.5 K. The symmetry of the EPR spectrum points to elongated tetragonal octahedral geometry of the complex. Examined heterochelate exhibits solvatochromic properties. Blue shift of the vis absorption band with increased solvent polarity is observed, Δν‾max in examined solvents amounts to 1466 cm(-1).
Department of Instrumental Analysis, Institute of Chemistry and Environmental Protection, West Pomeranian University of Technology, Szczecin, Av. Piastów 42, 71-065 Szczecin, Poland. Electronic address: monka@zut.edu.pl.
Monika
M
Gąsiorowska
Institute of Physics, West Pomeranian University of Technology, Szczecin, Av. Piastów 48, 70-311 Szczecin, Poland.
Janusz
J
Typek
Department of Instrumental Analysis, Institute of Chemistry and Environmental Protection, West Pomeranian University of Technology, Szczecin, Av. Piastów 42, 71-065 Szczecin, Poland.
Jacek Adam
JA
Soroka
Department of Instrumental Analysis, Institute of Chemistry and Environmental Protection, West Pomeranian University of Technology, Szczecin, Av. Piastów 42, 71-065 Szczecin, Poland.
Marta Justyna
MJ
Sawicka
Department of Instrumental Analysis, Institute of Chemistry and Environmental Protection, West Pomeranian University of Technology, Szczecin, Av. Piastów 42, 71-065 Szczecin, Poland.
Elwira Katarzyna
EK
Wróblewska
Institute of Physics, West Pomeranian University of Technology, Szczecin, Av. Piastów 48, 70-311 Szczecin, Poland; Department of Solid State Physics, Faculty of Physics, University of Athens, Panepistimiopolis, 15784 Zografos, Athens, Greece.
Niko
N
Guskos
Institute of Physics, West Pomeranian University of Technology, Szczecin, Av. Piastów 48, 70-311 Szczecin, Poland.
Grzegorz
G
Żołnierkiewicz
D016880:Anisotropy; D003300:Copper / Q000737:chemistry*; D004553:Electric Conductivity; D004578:Electron Spin Resonance Spectroscopy; D007211:Indoles / Q000737:chemistry*; D008024:Ligands; D060328:Magnetic Phenomena; D066244:Proton Magnetic Resonance Spectroscopy; D012997:Solvents / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014316:Tritium / Q000737:chemistry*
D007211:Indoles; D008024:Ligands; D012997:Solvents; D014316:Tritium; D003300:Copper
8-Hydroxyquinoline; Complex; Copper; Solvatochromism; Spectroscopy