Clinical Chemistry

Catenanes, Rotaxanes, and Knots - download pdf or read online

By J. P. Sauvage, Christiane Dietrich-Buchecker

ISBN-10: 3527295720

ISBN-13: 9783527295722

ISBN-10: 3527613730

ISBN-13: 9783527613731

This trip during the interesting international of molecular topology specializes in catenanes, rotaxanes and knots, their synthesis, houses, and functions and the speculation of interlocking and interpenetrating molecules. approximately 100 years of growth have handed on account that Willstatter's speculative imaginative and prescient of a molecule which includes interlinked earrings. yet even this day the synthesis of such buildings are a problem to the creativity of artificial chemists. those molecules aren't merely of educational curiosity, when you consider that they happen evidently. In such molecules as DNA, knots and comparable topological beneficial properties play a key position in biochemical approaches. furthermore, large learn at the homes of polyrotaxanes and polycatenanes convey capability functions as molecular magnets, wires or switches. Twelve foreign best specialists within the box current the huge and ambitious spectrum of the topology of those molecules, from theoretical points and new pathways in synthesis to probing their houses. All researchers operating during this interdisciplinary region, even if natural, inorganic or polymer chemists, in addition to fabric scientists, will welcome this finished and updated paintings as an inspiring resource for artistic study principles.

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Nyquist, C. L. Putzig, and M. A. Leugers, The Handbook of Infrared and Raman Spectra of Inorganic Compounds and Organic Salts, Academic Press, San Diego, 1997. 19. D. B. Chase, J. Am. Chem. , 108, 7485 (1986). 20. D. B. Chase, Anal. , 59, 881A (1997). 21. D. B. Chase, J-F. Rabolt, Fourier Transform Raman Spectroscopy: From Concept to Experiment, Academic Press, New York, 1994. 22. M. J. , London, 1999. Raman Spectroscopyfor Chemical Analysis. Richard L. McCreery Copyright 02000 John Wiley & Sons, Inc.

Obviously, a choice between Raman and FTIR for an analytical problem may depend on the selection rules applied to the analyte of interest, as well as the experimental geometry. Extensive compilations of IR and Raman frequencies are available, in some cases with FTIR and Raman spectra plotted together for comparison (6-9). 1, in part to illustrate differences in IR and Raman intensities. 1. Examples of Raman and IR Frequencies" Frequency (cm-' ) Alkanes CH3 sym stretch C -C stretch Cyclopentane ring breathing Alcohol 0 - H stretch Acetylene C -H bend Acetylene C=C C-N stretch in R-CN Cyanate C-N C-H in R-CHO C=O in R-CHO R-NO2 asym stretch R-NO2 sym stretch C-S stretch S -H stretch R2 S2 S -S stretch Benzene ring breathing Primary R-C1 Primary R -Br Primary R-I 2862-2882 1040- 1100 889 3635-3644 825-640 2230-2237 2230-2250 2245-2256 2800-2850 1730- 1740 1530- 1600 1310- 1397 580-704 2560-2590 507-512 992 650-660 565-560 500-510 IR" Ramanb vs vs - S m W S W S vs S S S vs m - vs W vs m-w vs vs S W m-w - S S vs Y S S vs vs S aTaken from Reference 8.

K. T. Schomacker, J. K. Delaney, and P. M. Champion, J. Chem. , 85,4240 (1986). 13. N. Abe, M. Wakayama, and M. Ito, J. , 6, 38 (1977). 14. C. J. Petty, P. J. Hendra, and T. Jawhari, Spectrochim. Acta, 47A, 1189 (1991). 15. N. Wada and S. A. Solin, Physica, 105B. 353 (1981). 16. J. M. Dudik, C. R. Johnson, and S. A. Asher, Chem. , 82, 1732 (1985). 17. M. A. Fryling, PhD. Dissertation, The Ohio State University, 1994. 18. M. R. Kagan, PhD. Dissertation, The Ohio State University, 1996. 19. Kenneth Ray, The Ohio State University, unpublished data.

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Catenanes, Rotaxanes, and Knots by J. P. Sauvage, Christiane Dietrich-Buchecker

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