Experimental determination of the aluminum-27 NMR quadrupole coupling constant of the hexaaquoaluminum ion in aqueous perchloric acid and mixed acetone-aqueous perchloric acid solution

1988 ◽  
Vol 27 (17) ◽  
pp. 3058-3060 ◽  
Author(s):  
J. Mark Garrison ◽  
Alvin L. Crumbliss
Keyword(s):  
Acid Solution ◽  
Experimental Determination ◽  
Perchloric Acid ◽  
Quadrupole Coupling Constant ◽  
Coupling Constant ◽  
Perchloric Acid Solution ◽  
Quadrupole Coupling ◽  
Aqueous Perchloric Acid

Dinuclear complexes of tetravalent cerium in an aqueous perchloric acid solution

2012 ◽  
Vol 41 (24) ◽  
pp. 7190 ◽  
Author(s):  
Atsushi Ikeda-Ohno ◽  
Satoru Tsushima ◽  
Christoph Hennig ◽  
Tsuyoshi Yaita ◽  
Gert Bernhard
Keyword(s):  
Acid Solution ◽  
Perchloric Acid ◽  
Dinuclear Complexes ◽  
Perchloric Acid Solution ◽  
Aqueous Perchloric Acid ◽  
Tetravalent Cerium

Millimetre-wave spectrum of HC17O+. Experimental and theoretical determination of the quadrupole coupling constant of the 17O nucleus

2001 ◽  
Vol 79 (2-3) ◽  
pp. 359-366 ◽  
Author(s):  
L Dore ◽  
C Puzzarini ◽  
G Cazzoli
Keyword(s):  
Wave Spectrum ◽  
Quadrupole Coupling Constant ◽  
Basis Sets ◽  
Coupling Constant ◽  
Centrifugal Distortion ◽  
Millimetre Wave ◽  
Quadrupole Coupling ◽  
Self Consistent Field ◽  
Centrifugal Distortion Constants

The millimetre-wave spectrum of HC17O+ has been analyzed up to 348.2 GHz by recording the J = 2 [Formula: see text] 1 and J = 4 [Formula: see text] 3 rotational transitions. Present measurements and the previous detection of the J = 1 [Formula: see text] 0 transition carried out in this laboratory allowed us to determine accurate values of the rotational and centrifugal distortion constants, and of the nuclear quadrupole coupling (χ) and spin-rotation constants. Moreover, χ has been evaluated from the electric field gradient at the oxygen nucleus calculated by using the multiconfiguration self-consistent field approach plus subsequent multireference configuration interaction computation, employing basis sets of quadruple zeta quality. Excellent agreement with experiment has been obtained. In addition, the molecular dipole moment has been calculated at the same level of accuracy. PACS No.: 33.20Bx

A Simplified Technique for Determination of Small Amounts of Calcium as Oxalate

1964 ◽  
Vol 10 (4) ◽  
pp. 352-365
Author(s):  
Donald D Van Slyke ◽  
Paul E Carson
Keyword(s):  
Acid Solution ◽  
Calcium Oxalate ◽  
Perchloric Acid ◽  
Perchloric Acid Solution ◽  
Ceric Sulfate ◽  
Glass Filter ◽  
Oxalate Precipitation ◽  
Oxalate Solution ◽  
Filter Tube

Abstract Procedures for determination of calcium by oxalate precipitation are reviewed, and a method is described in which the calcium oxalate precipitate is both formed and washed in a filter tube with a fritted-glass filter. Washing with saturated calcium oxalate solution is completed in 1-2 min. The washed precipitate is redissolved in perchloric acid solution and the dissolved oxalate is either titrated or determined manometrically by the CO2 evolved from oxidation with ceric sulfate.

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