The Cr3+ ion, however, shows the influence of occupying a large site: the crystal field is weak and the emission is of the broad-band type (4T2 → 4A2). The vibrational structure in this band is analyzed.G. Blasse and G.J. Dirksen...
The heteroselective initiators for rac-lactide based on bis(phenolate) complexes with a temporary chiral reaction site, capable of ring-opening polymerizat... JC Buffet,A Kapelski,J Okuda - 《Macromolecules》 被引量: 54发表: 2010年 Trivalent Sc 3+ ion conduction in the Sc 2(WO 4) 3–...
The hyperfine structures and isotope shifts of five scandium isotopes (Z 21) in the mass region 42≤ A ≤ 46, with isomeric states in 44,45Sc, have been measured [1,2]. Radioactive isotopes were produced in a fusion ion guide by irradiating a 45Sc target in reactions of the type (d...
(1942). Toxicity of the chloride: Haleyet al.,J. Pharm. Sci.51,1043 (1962). Review of isolns including ion-exchange techniques: F. H. Speddinget al.,J. Electrochem. Soc.105,683-686 (1958). Review of prepn, properties and compds: R. C. Vickery,The Chemistry of Yttrium and ...
The applied ion beam was a 3 MeV H + beam produced with a 3 MV Tandetron® accelerator focused to 5–8 μm in diameter. First, an overview scan of the target area (2 × 2 mm) of the sample was performed, to identify the exact position of the garnet crystal of interest. Then,...
Scandium (Sc) is one of the rare earth elements, are widely used in the production of batteries, electric light source ... Manufacturer :Jiangsu Kingshan New Material Co., Ltd [China] [ 關聯分類 :Chemicals,Resin] [ 關聯關鍵詞 :Scandium adsorption resin,Scandium resin,Ion exchange resin] ...
View Solution (a) Explain the structure of dichromate ion. (b) Why are cadmium salt white ? View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium ...
The use of a cellulose ion-exchanger (Hyphan) for the isolation of the rare earth elements (REE's) yttrium and scandium from aqueous solution is described... IM Kenawy,MAH Hafez - 《Analytical Sciences》 被引量: 0发表: 1989年 Novel polyanion conduction in Sc2(WO4)3 type negative therma...
FIG. 7 illustrates the negative ion DCI mass spectra of Tb2@C79N. FIG. 8 illustrates the X-ray crystallographic structure for crystals of Tb2@C79N.Ni(OEP).2C6H6. DESCRIPTION OF EMBODIMENTS OF THE INVENTION The present invention is directed to a class of endohedral metalloheterofullerenes and...
type structure (R-3m).50,51The Y6octahedral layers (Fig.1a) were distorted and sheathed with chlorine atoms to form Cl–Y–Y–Cl close-packed layers with an interlayer distance of 3.56 Å. Two distinct Y–Y separations of 3.57 Å (shared edge) and 3.73 Å can be ...