geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Formation and composition of the precipitates of various metal 8-selenoquinoline complexes


, : Formation and composition of the precipitates of various metal 8-selenoquinoline complexes. Talanta 19(4): 479-487

The effect of acidity on the precipitation of various bivalent metal 8-selenoquinoline and 8-mercaptoquinoline complexes has been systematically studied and compared. The metal ions were Zn(2+), Cd(2+), Pb(2+), Mn2+, Ni(2+), Cu(2+) and Co(2+). Most of the metal ions, except copper(II) and cobalt(II), precipitate as a. 1:2 complex, metal :ligand. However, in hydrochloric acid solution cadmium precipitates as CdR(2).2HCl and lead as PbR(2).2HCl or PbR.Cl. Copper(II) is reduced to copper(I) and precipitates as CuR.RH at pH above 2.0 and as CuR in strongly acidic solution. Cobalt(II) does not give a precipitate of composition but appears to precipitate as a mixture of CoR(2).RH and fixed CoR(2) or as other complexes. The reasons for the formation of the various types of precipitate are considered.

US$29.90

PMID: 18961076


Other references

Anonymous, 1985: Medical and dental staffing prospects in the NHS in England and Wales, 1984. Health Trends 17(3): 45-52

Brooke, B.N., 1979: Chance acquaintances. British Medical Journal 2(6198): 1130-1131

Ausman, L., 1984: The importance of Midwest North America as a market and a source for animals and animal products. Proceedings of the International Conference of the Animal Air Transportation Association: 26, (10th) 1-2

Bendayan, R.; Kuh, D.; Cooper, R.; Muthuri, S.; Muniz-Terrera, G.; Adams, J.; Ward, K.; Richards, M., 2017: Associations of Childhood and Adulthood Cognition with Bone Mineral Density in Later Adulthood: A Population-Based Longitudinal Study. This study explores the association between cognitive ability in childhood and midlife and bone health outcomes in early old age; and the relationships of these bone measures with contemporaneous and subsequent cognitive ability in the MRC Nationa...

Kon H., 1981: The mechanical properties of bone cement methyl methacrylate and its strength alteration in vivo. Bone cement (methylmethacrylate) is extensively used for the fixation of various endoprostheses in [human] orthopedic surgery. Although much work has been done on the use of this material, relatively little is known about its basic characteristics...

Boldyrev; Simons, 1998: On the Ground Electronic States of TiF and TiCl. The low-lying electronic states of TiF and TiCl have been studied using high level ab initio techniques. Both are found to have two low-lying excited electronic states, 4Sigma- (0.080 eV (TiF) and 0.236 eV (TiCl)) and 2Delta (0.266 eV (TiF) and 0....

Dixon, T.F.; Purdon, M., 1952: Serum 5-nucleotidase. Nature 170(4325): 500-501

Anonymous, 1974: Plants, animals and man. Proceedings, 28th Annual Meeting of the Soil Conservation Society of America, 1973, Hot Springs, Arkansas. Includes the following:Honing, F.W. Impact of air pollution on the forest resource. [pp. 23-26]Schreiner, K.M. Endangered fish and wildlife [in the USA] - problems and solutions. [pp. 153-158]Gray, J. Role of forestry in meeting the needs of plant...

Müller, H.G.; Brienl, H.; Grün, L., 1967: Exposure of the mature newborn infant to bacterial flora of the mother and her environment. Archiv für Gynakologie 204(2): 163-164

Miah M.A.; Samad M.A., 1995: Environmental impact from reduced flow of natural water in northwestern Bangladesh. International Union of Geodesy and Geophysics General Assembly = Union Geodesique et Geophysique Internationale Comptes Rendus de la