Spectral, magnetic and thermal investigations of some d-electron element 3-methoxy-4-methylbenzoates

Syntheses, Physico‐Chemical Studies and Antioxidant Activities of Transition Metal Complexes with a Perimidine Ligand

“…The medium intensity bands observed at 1590 cm –1 in the free ligand assigned to ν C–O stretching vibration of furan moiety is shifted to lower values ca. 10 cm –1 in complexes, suggesting the involvement of the oxygen atom to the metal ion,26 which is further confirmed by the appearance of a new medium intensity band in the region 515–520 cm –1 indicating participation of the oxygen atom of the furan ring in coordination 27,28. A band appearing in the region 285–295 cm –1 may reasonable be assigned to ν (M–Cl) vibration,29 whereas the other bands were found at their expected position.…”

Synthesis, thermal behavior, and other properties of Y(III) and La(III) complexes with 4,4′-bipyridine and trichloro- or dibromoacetates

“…Here, we describe new complexes with formulae: Y(4-bpy) 2 [19][20][21][22]. The thermal decomposition of the described complexes in flowing dynamic air atmosphere is a multistage and overlapping process.…”

Synthesis, thermal study and some properties of Zn(II), Cd(II) and Pb(II) compounds with mono-, di- and trichloroacetates

“…The thermal properties of complexes in air were studied by TG-DTG techniques in the range of temperature 25-1000°C at a heating rate of 10°C min -1 ; TG and DTG curves were recorded on Netzsch TG 209 apparatus in flowing dynamic air atmosphere v = 20 mL min -1 using ceramic crucibles. The mass spectra were measured on mass spectrometer ThermoStar, Balzers (Germany), in the range of temperature 25-1000°C at a heating rate 10°C min -1 in flowing [25,26]. In addition, a broad band in the water stretching region (ca 3450-3350 cm -1 ) appear for all described complexes.…”