scholarly journals Solvent Extraction of Trivalent Rare Earth Metal Ions with Carboxylate Derivatives of Calixarenes.

1995 ◽  
Vol 11 (6) ◽  
pp. 893-902 ◽  
Author(s):  
Keisuke OHTO ◽  
Masayuki YANO ◽  
Katsutoshi INOUE ◽  
Takehisa YAMAMOTO ◽  
Masahiro GOTO ◽  
...  
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Trivalent Rare Earth ◽  
Derivatives Of

scholarly journals Molecular cleft or tweezer compounds derived from trioxabicyclo[3.3.1]nonadiene diisocyanate and diacid dichloride

2015 ◽  
Vol 11 ◽  
pp. 1-8 ◽  
Author(s):  
Gert Kollenz ◽  
Ralf Smounig ◽  
Ferdinand Belaj ◽  
David Kvaskoff ◽  
Curt Wentrup
Keyword(s):  
Rare Earth ◽  
Crown Ether ◽  
Dft Calculations ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Alkaline Earth ◽  
Earth Metal ◽  
X Ray ◽  
X Ray Crystallography ◽  
Derivatives Of

The structures of two derivatives of the bisdioxine diisocyanate 1, the bisurea 4 and the biscarbamate 5, are established by X-ray crystallography and DFT calculations. These compounds possess endo,endo structures, in the case of the bisurea 4 with two nearly parallel pendant chains. The X-ray structures are reproduced very well by DFT calculations. Similar endo,endo conformations are calculated for the bisamide crown ether derivatives 7, where two proximate and nearly parallel crown ether units endow the molecules with a claw-like molecular cleft or tweezer structure as evidenced by an enhanced ability to extract some alkali, alkaline earth and rare earth metal ions.

Solvent extraction of rare earth metal ions with 1-(2-pyridylazo)-2-naphthol (PAN)

1987 ◽  
Vol 118 (12) ◽  
pp. 1325-1333 ◽  
Author(s):  
Bożena Kuźnik ◽  
Anna Malinowska
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Earth Metal

scholarly journals Extractive Separation of Trivalent Rare Earth Metal Ions with Phenylphosphoric Acid Type of Trident Molecule for Rare Metal Recovery

2018 ◽  
Vol 23 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Keisuke OHTO ◽  
Hiromasa MURASHIMA ◽  
Shintaro MORISADA ◽  
Hidetaka KAWAKITA ◽  
Marco WENZEL ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Rare Metal ◽  
Metal Recovery ◽  
Acid Type ◽  
Extractive Separation ◽  
Trivalent Rare Earth

Tris-(isopropoxy methylphosphonato) complexes of trivalent rare-earth metal ions

1970 ◽  
Vol 20 (1) ◽  
pp. 29-36 ◽  
Author(s):  
N.M. Karayannis ◽  
C.M. Mikulski ◽  
J.V. Minkiewicz ◽  
L.L. Pytlewski ◽  
M.M. Labes
Keyword(s):  
Rare Earth ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Trivalent Rare Earth

Infrared and Raman spectroscopic and theoretical studies of nonaaqua complexes of trivalent rare earth metal ions

2005 ◽  
Vol 61 (7) ◽  
pp. 1639-1645 ◽  
Author(s):  
János Mink ◽  
Mikhail Yu. Skripkin ◽  
László Hajba ◽  
Csaba Németh ◽  
Alireza Abbasi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Ions ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Theoretical Studies ◽  
Raman Spectroscopic ◽  
Trivalent Rare Earth
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