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Chemically-bonded chiral column packings for high-performance liquid chromatography (1982)

Akanya, J. N. ; Hitchen, S. M. ; Taylor, D. R.

Springer

Chromatographia 16 (1982), S. 224-227

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ISSN: 1612-1112

Keywords: Liquid chromatography ; Chiral bonded phases ; Aminoacid racement resolution

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Summary N-Protected aminoacids have been chemically bonded to aminopropylated silica gel, and the resulting chiral phases have been applied to the LG resolution of racemic mixtures of polar compounds. Best results were obtained with surfacebound N-formyl-isoleucine and N-formylvaline, with which baseline resolutions of a range of aminoacid and aminoalcohol derivatives were achieved.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02258907

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Interaction between carbon dioxide and naphthalene: A molecular modeling approach (1994)

Battersby, P. ; Dean, J. R. ; Hitchen, S. M. ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Journal of Computational Chemistry 15 (1994), S. 580-587

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ISSN: 0192-8651

Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Computer Science

Notes: The formation of a charge-transfer complex between carbon dioxide and naphthalene was studied using a molecular modeling program, with the aim of studying the solubility of naphthalene in supercritical carbon dioxide. The orbitals involved in the formation of the complex were studied using MINDO/3 as the semi-empirical method. A solvent cage was constructed, and the maximum number of carbon dioxide molecules to surround naphthalene was found to be 20. The heat of interaction of the complex was obtained using MINDO/3. © 1994 by John Wiley & Sons, Inc.

Additional Material: 5 Ill.