Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Cri- Ru.,

The photochemical and thermal stabilities of Ru complexes have been investigated in detail [8,153-156]. For example, it has been reported that the NCS ligand of the N3 dye, cri-Ru(II)(dcbpy)2(NCS)2 (dcbpy = 2,2 -bipyridyl-4,4 -dicarboxylic acid), is oxidized to produce a cyano group (—CN) under irradiation in methanol solution. It was measured by both ultraviolet-visible (UV-vis) absorption spectroscopy and nuclear magnetic resonance (NMR) [8,153]. In addition, the intensity of the infrared (IR) absorption peak attributed to the NCS ligand starts to decrease at 135°C, and decarboxylation of N3 dyes occurs at temperatures above 180°C [155]. Desorption of the dye from the 2 surface has been observed at temperatures above 200°C. [Pg.158]

Reactions of 2-Acetoxy-4,6-di-0-acetyl-3-0-(2,6-dichlorobenzoyl)-D-glucal, Tri-C-acetyl-3-deoxy-a-D-cry// ru-hex-2-enopyranosyl Chloride, and Related Compounds, R. U. Lemieux and R. J. Bose, Can. J. Chem., 44 (1966) 1855-1862. [Pg.20]

In the case of (1), even the details of ligand coordination vary, because the Fe cluster has a structure with all terminal carbonyls, whereas the iso-structural Ru and Os cogenors have three bridging carbonyls and a different phosphine distribution (Fig. 11). Important metrical details for all the crys-tallographically characterized Fe-Pt, Ru-Pt, Os-Pt, Co-Pt, Rh-Pt, and Ir-Pt clusters are given in Tables III—VIII respectively. Due to the paucity of examples, crystallographically characterized Ni-Pt and Pd - Pt clusters are not tabulated separately but are discussed in the individual sections, as are clusters containing more than two different metals. [Pg.329]

Unusual dinuclear complexes are often formed by the oxidation of the [Cr(HaO) ion with an inert metal complex. The species [(HaO)5Cr (isonicotinamide)Ru"-(NH3)6] + is formed in this way, in which the isonicotinamide bridges between the two metal ions, being co-ordinated to ruthenium(n) at the heterocyclic pyridine nitrogen atom and to chromium(in) at the carbonyl oxygen atom. The kinetics of the decomposition of this dinuclear species have been investigated in the presence of an acidic aqueous chromium(n) catalyst. The observed rate constant. A, is given by A = Ao + A-i/[H+] + A-2[Cri ]/[H+l... [Pg.163]

See other pages where Cri- Ru., is mentioned: [Pg.107]    [Pg.298]    [Pg.604]    [Pg.3846]    [Pg.107]    [Pg.298]    [Pg.604]    [Pg.3846]    [Pg.267]    [Pg.330]    [Pg.73]    [Pg.21]    [Pg.2132]    [Pg.58]    [Pg.40]    [Pg.782]    [Pg.466]    [Pg.502]    [Pg.736]    [Pg.736]    [Pg.736]    [Pg.736]    [Pg.494]    [Pg.728]    [Pg.728]    [Pg.728]    [Pg.720]    [Pg.44]    [Pg.481]    [Pg.712]    [Pg.543]    [Pg.810]    [Pg.810]    [Pg.810]    [Pg.531]    [Pg.774]    [Pg.774]    [Pg.774]    [Pg.774]    [Pg.74]    [Pg.542]    [Pg.808]    [Pg.808]    [Pg.808]    [Pg.808]    [Pg.494]    [Pg.728]    [Pg.728]   
See also in sourсe #XX -- [ Pg.262 ]



SEARCH



Crying

© 2024 chempedia.info