Magnetic susceptibility of complexes

Tsukerblat, B.S., Ablov, A.V., Aranov, V.Sh., Magnetic susceptibility of complexes with three... 

The electronic spectra and magnetic susceptibility of [Ni(21)Cl2] were found to be consistent with a five-coordinate high spin complex. This complex has greater antitumor activity against P388 lymphocytic leukemia test system in mice than cobalt(II), copper(II), zinc(II) and platinum(II) complexes of 21 [187],... 

Infrared spectra were recorded on a Perkin Elmer model 680 spectrophotometer as mulls in nujol or fluorolube. The magnetic susceptibility of the copper complexes was measured from 4.2 to 300 K by the Faraday method . X-ray photoelectron spectroscopy (XPS) was performed with a Perkin Elmer hemispherical spectrometer. 

The uncorrected magnetic susceptibility of the cesium alum, determined by the Gouy method using the complex HgCo(NCS)4 as standard, is —0.12 c.g.s. units per gram this has been found to change to —0.03 c.g.s. units after 14 weeks.4... 

In 2005, Matsuda and co-workers [20] investigated the magnetic properties of complex 93. The magnetic susceptibility measurement reveals the Mnm ion in the low-spin state (d45 = 1). However, the jJ.es at room temperature is 3.28pB, which is considerably higher than the calculated spin-only value of 2.83 pB for 5 = 1. The extraordinary pe i value should be due to the spin-orbit coupling effect. 

Table 3. Characteristic absorption bands of visible, infrared, and far-infrared spectra and magnetic susceptibility of pendant-type polymer-Co(III) and -Cr(lII) complexes... 

The PVP-Cr(III) complex is paramagnetic because a Cr(IlI) ion possesses three spins (3d3). The molar magnetic susceptibility of the FVP-Cr(IH) complexes given in Table 3 is the same as that of the pyridine-Cr(III) complex. The ESR spectra of PVP-Cr(III) are similar to that of pyridine-Cr(III). Thus, we considered that the Cr(III) complexes on the FVP chain were magnetically dilute and the Cr(III) ions did not interact with each other, although they coordinated along the PVP chain at high concentration. 

Step 2. Electron-transfer the decrease in the d-d absorption subsequent to the steep rise of the absorbance in Fig. 27(b) corresponds to the formation of Cu(I) ions, i.e. electron transfer from the substrate to Cu(II) ions. The d orbitals of Cu(I) are perfectly occupied, so that d-d absorption spectrum does not appear in the Cu(I) complex. The rate constant ke is obtained from the falling curve of the d-d absorption. The fraction of Cu(II) ions is also determined from the magnetic susceptibility of the reaction system. The Cu(II) ion contains an unpaired electron and is paramagnetic, while the Cu(I) ion is diamagnetic. Magnetic measurement is applicable particularly to an insoluble catalyst system155. ... 

Table I. Molar Susceptibilities 1 and Magnetic Moments of Complexes...

The magnetic susceptibilities of solutions of hydrolysis products were consistent with the binuclear complex in such solutions having a double hydroxide bridge [V(OH)2V]4+ rather than an oxo bridge [V—O—v]4+.230... 

---