Cornelis Altona

Overview

Best Publications

• The relationship between proton-proton NMR coupling constants and substituent electronegativities—I : An empirical generalization of the karplus equation

  C.A.G. Haasnoot;F.A.A.M. de Leeuw;C. Altona

  2925
  Citations

• Conformational analysis of the sugar ring in nucleosides and nucleotides. A new description using the concept of pseudorotation.

  Unknown

  1790
  Citations

• Conformational analysis of the sugar ring in nucleosides and nucleotides. Improved method for the interpretation of proton magnetic resonance coupling constants.

  Unknown

  693
  Citations

• Conformation of non-aromatic ring Compounds—XXV: Geometry and conformation of ring D in some steroids from X-ray structure determinations

  C. Altona;H.J. Geise;C. Romers

  557
  Citations

• Prediction of anti and gauche vicinal proton‐proton coupling constants in carbohydrates: A simple additivity rule for pyranose rings

  Cornelis Altona;Cornelis A. G. Haasnoot

  541
  Citations

• Conformational Analysis of the Deoxyribofuranose Ring in DNA by means of Sums of Proton-proton Coupling Constants: A Graphical Method

  Lambertus J. Rinkel;Cornelis Altona

  415
  Citations

• Application of self-consistent-field ab initio calculations to organic molecules: II. Scale factor method for the calculation of vibrational frequencies from ab initio force constants: ethane, propane and cyclopropane

  C.E. Blom;C. Altona

  395
  Citations

• Empirical Correlations Between Conformational Parameters in β‐D‐Furanoside Fragments Derived from a Statistical Survey of Crystal Structures of Nucleic Acid Constituents Full Description of Nucleoside Molecular Geometries in Terms of Four Parameters

  Harry P. M. De Leeuw;Cornelis A. G. Haasnoot;Cornelis Altona

  326
  Citations

• The relationship between proton–proton NMR coupling constants and substituent electronegativities. II—conformational analysis of the sugar ring in nucleosides and nucleotides in solution using a generalized Karplus equation

  C. A. G. Haasnoot;F. A. A. M. de Leeuw;H. P. M. de Leeuw;C. Altona

  295
  Citations

• Conformational analysis of nucleic acids. Determination of backbone geometry of single‐helical RNA and DNA in aqueous solution

  C. Altona

  292
  Citations

• Computer-assisted pseudorotation analysis of five-membered rings by means of proton spin-spin coupling constants: program PSEUROT

  Frank A. A. M. De Leeuw;Cornelis Altona

  259
  Citations

• Empirical group electronegativities for vicinal NMR proton–proton couplings along a C ? C bond: Solvent effects and reparameterization of the Haasnoot equation

  Cornelis Altona;Robert Francke;Rudy de Haan;Johannes H. Ippel

  206
  Citations

• Relationship between proton ? proton NMR coupling constants and substituent electronegativities. V—Empirical substituent constants deduced from ethanes and propanes

  Cornelis Altona;Johannes H. Ippel;Aldert J. A. Westra Hoekzema;Cornelis Erkelens

  180
  Citations

• Relationship between proton–proton nmr coupling constants and substituent electronegativities. III. Conformational analysis of proline rings in solution using a generalized Karplus equation

  C. A. G. Haasnoot;F. A. A. M. De Leeuw;H. P. M. De Leeuw;C. Altona

  179
  Citations

• Conformational analysis of the adduct cis-[Pt(NH3)2 d(GpG)]+ in aqueous solution. A high field (500-300 MHz) nuclear magnetic resonance investigation.

  Jeroen H.J. den Hartog;Cornelis Altona;Jean-Claude Chottard;Jean-Pierre Girault

  175
  Citations

• Furanose sugar conformations in DNA from NMR coupling constants.

  J. Van Wijk;B. D. Huckriede;J. H. Ippel;C. Altona

  172
  Citations

• Application of self-consistent-field ab initio calculations to organic molecules

  C.E. Blom;C. Altona

  165
  Citations

• Force field parameters for sulfates and sulfamates based on ab initio calculations: Extensions of AMBER and CHARMm fields

  Cornelis J. M. Huige;Cornelis Altona

  161
  Citations

• Conformational analysis of β-D-ribo-, β-D-deoxyribo-, β-D-arabino-, β-D-xylo-, and β-D-lyxo-nucleosides from proton–proton coupling constants

  Frank A. A. M. de Leeuw;Cornelis Altona

  149
  Citations

• Conformation of non-aromatic ring compounds—XLVII

  A.J. de Hoog;H.R. Buys;C. Altona;E. Havinga

  136
  Citations

• Relationship between proton—proton NMR coupling constants and substituent electronegativities. IV—An extended karplus equation accounting for interactions between substituents and its application to coupling constant data calculated by the Extended Hückel method†

  Lambertus A. Donders;Franciscus A. A. M. De Leeuw;Cornelis Altona

  135
  Citations

• Interpretation of vicinal proton-proton coupling constants by a generalized Karplus relation. Conformational analysis of the exocyclic C4′-C5′ bond in nucleosides and nucleotides: Preliminary Communication

  Cornelis A. G. Haasnoot;Frank A. A. M. de Leeuw;Harry P. M. de Leeuw;Cornelis Altona

  132
  Citations

• Geometry and Conformational Properties of Some Five‐ and Six‐Membered Heterocyclic Compounds Containing Oxygen or Sulfur

  C. Romers;C. Altona;H. R. Buys;E. Havinga

  63
  Citations