Complexes axial

The reaction of [Ni(n-Bu2Dtc)3] Br with Ni(n-Bu2 Dtc)2 results in a solution with an EPR spectrum that has been attributed to a reactive asymmetric Ni(III) complex (231). This complex may be similar to that reported by Willemse et al. (631), who obtained Ni(IIIX -Bu2Dtc)21 by the low-temperature (-30°C) oxidation of Ni(n-Bu2Dtc)2 with I2. This complex is characterized by a C—N stretching frequency of 1518 cm-1 and a M—S vibration at 377 cm 1. The /ueff of 1.33 BM is low for a five-coordinate or six-coordinate low-spin complex. Axial EPR spectrum was observed with = 2.260, g2 = 2.215, andg3 = 2.027. 

Ozoemena KI, Nyokong T (2006) Comparative electrochemistry and electrocatalytic activities of cobalt, iron and manganese phthalocyanine complexes axially co-ordinated to mercaptopyridine self-assembled monolayer at gold electrodes. Electrochim Acta 51(13) 2669-2677... 

Figure 4 shows the molecular structures of the monomeric phthalocyanines used as the active layer of p-type OFET devices, and Table 1 organizes the performance of these phthalocyanine-based OFETs. As can be seen, unsubstituted metal-free phthalocyanine and its metal complexes, axial substituted metal phthalocyaines, and peripheral tetra-substituted phthalocyanines all can work as p-type semiconductors for OFET devices. Most of the semiconductors composed of peripheral unsubstituted and axial substituted phthalocyanine derivatives are prepared through vacuum deposition method with a few exceptions being made of corresponding single... 

The various photochemical studies of these compounds have been conducted primarily because of the interest of researchers in the synthesis, properties, and biological activity of vitamin and its derivatives. The structure of vitamin Bj2, as determined by Crowfoot-Hodgkin et al. 109), is shown in Fig. 2. It consists of cobalt in a corrin ring complexed axially by an a-S, 6-dimethylbenzimidazole nucleotide and by cyanide ion. Replacement of the axial CN by a methyl group gives methylcobalamin, and by 5 -deoxyadenosine gives coenzyme Bj2. The formal oxidation state of... 

Scheldt, W. R., Geiger, D. K. Hayes, R. G. and Lang, G. (1983). Control of spin state in (porphinato)iron(III) complexes. Axial ligand orientation effect leading to an intermediate-spin complex. Molecular structure and physical characterization of the monoclinic form of bis(3-chloropyridine)(octaethylporphinato)iron(III) perchlorate. J. Am. Chem. Soc., 105, 2625-32. [198]... 

The Brooks Range is dominated by major thrust faults which produced complex series of thrust belts and sheets. Northern parts of the range, the Foothill Fold Belt, consists of shallow folds with complex axial shale cores while southern zone comprises of complex folds and thrust faults. Several structures in the northern part of the Foothill Fold Belt contain hydrocarbons. 

Complexes axial base V k Conformation Hydrogen bond... 

Continuous, flash, and laser flash photolyses of phthalocyanine complexes [Rh(pc)(MeOH)X], with X = Cl, Br, or I, show that replacement of halide by methanol is a redox-induced process, via rhodium(III)-pc and rhodium(II) species/ This may be compared with copper(II) analogues, where redox-induced substitution involves copper(III)-pc complexes/ Axial ligand substitution processes must also be involved in photoinduced hydrogen abstraction from coordinated solvent in rhodium(III)-phthalocyanine complexes/ ... 

Dickins RS, Parker D, Bruce JI, Tozer DJ. Correlation of Optical and NMR Spectral Information with Coordination Variation for Axially Symmetric Macrocyclic Eu(III) and Yb(ni) Complexes Axial Donor Polarisability Determines Ligand Field and Cation Donor Preference. Dalton Trans 2003 2003 1264-1271. 

---