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38 383 (0,102s)

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Ab initio calculations of spin-spin coupling constants in anhydrodeoxythymidines

Ab initio calculations of spin-spin coupling constants in anhydrodeoxythymidines...

BO - Biofyzika

  • 2000
  • Jx
Result

Restricted conformational flexibility of furanose derivatives: Ab initio interpretation of their nuclear spin-spin coupling constants

Indirect spin-spin NMR 1H-1H coupling constants of newly synthesized furanose monosaccharide derivatives were interpreted on the basis of ab initio modeling. Epimino groups were inserted into the sugars and limited...

CF - Fyzikální chemie a teoretická chemie

  • 2004
  • Jx
Result

A complete set of NMR chemical shifts and spin-spin coupling constants for L-Alanyl-L-Alanine zwitterion and analysis of its conformational behavior

With the aid of labeling with stable isotopes (15N and 13C) a complete set of chemical shifts and indirect spin-spin coupling constants was obtained for the zwitterionic form of L-alanyl-L-alanine in aqueous soluti...

CF - Fyzikální chemie a teoretická chemie

  • 2005
  • Jx
Result

Rovibrational and Temperature Effects in Theoretical Studies of NMR Parameters

Book chapter summarizes rotational and vibrational, as well as thermal effects on various NMR parameters (chemical shieldings, shifts and spin-spin coupling constants) in theoretical works containing various types ...

CF - Fyzikální chemie a teoretická chemie

  • 2016
  • C
  • Link
Result

Spectral Assignments and Reference Data 2J(29Si?O?29Si) Coupling Constants in Oligosiloxanes.

The absolute values of spin?spin couplings between 29Si nuclei in siloxanes, 2J(29Si?O?29Si), were determined. The couplings are small and cover a narrow range of values (0?5 Hz). The coupling constant...

CF - Fyzikální chemie a teoretická chemie

  • 2007
  • Jx
Result

Ab Initio Calculations of of Spin - Spin Coupling Constants in Anhydrodeoxythymidines

N/A...

CF - Fyzikální chemie a teoretická chemie

  • 2000
  • Jx
Result

Calculation of Structural Behavior of Indirect NMR Spin-Spin Couplings in the Backbone of Nucleic Acids

Values of indirect NMR spin-spin coupling constants between 31P, 13C, and 1H nuclei calculated by high-level quantum mechanics were related to the backbone torsion angles of nucleic acids. It was shown that the

CF - Fyzikální chemie a teoretická chemie

  • 2006
  • Jx
Result

Conformation of DNA five-membered sugar rings proton-proton spin-spin coupling constants

CF - Fyzikální chemie a teoretická chemie

  • 1997
  • Jx
Result

29Si - 13C Spin-Spin Couplings over a Si ? O ? Csp3 Link

29Si-13C spin spin couplings over one, two, and three bonds as well as other NMR parameters were calculated and measured for a series of trimethylsilylated alcohols. The signs of the coupling constants det...

CF - Fyzikální chemie a teoretická chemie

  • 2008
  • Jx
Result

Exploring the Structure of a DNA Hairpin with the Help of NMR Spin-spin Coupling Constants:An Experimental and Quantum Chemical Investigation

spin-spin coupling constants 1J(X, H) (X= C, N), 1J(C, X) (X= C, N), and 2J(X,H) (X to determine diamagnetic spin-orbit, paramagnetic spin-orbit, Fermi contact, and spin-dipolar contribu...

CF - Fyzikální chemie a teoretická chemie

  • 2002
  • Jx
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