1. Bond Length–Electron Density Relationships: From Covalent Bonds to Hydrogen Bond Interactions

   • Ibon Alkorta
   • Isabel Rozas
   • José Elguero

   OriginalPaper Pages: 243 - 247

2. Critical Points in a Crystal and Procrystal

   • Vladimir Tsirelson
   • Yury Abramov
   • Dirk Feil

   OriginalPaper Pages: 249 - 254

3. Spectra and Structures of Silicon-Containing Compounds. XXIV.* Raman and Infrared Spectra, r ₀ Structural Parameters, Vibrational Assignment, Barriers to Internal Rotation, and Ab Initio Calculations of Ethylsilane

   • Tarek A. Mohamed
   • Gamil A. Guirgis
   • James R. Durig

   OriginalPaper Pages: 255 - 264

4. Conformational Stability, Structural Parameters, Vibrational Frequencies, and Raman and Infrared Intensities of Allylsilane

   • Gamil A. Guirgis
   • Yasser E. Nashed
   • James R. Durig

   OriginalPaper Pages: 265 - 277

5. Crystal Structures of Twisted Di(2-Pyridyl)ketone and Planar Azo-di(2-Pyridine) and Their Discussion Based on PM3 Enthalpy Hypersurfaces for the Isoelectronic Molecules

   • Hans Bock
   • Rüdiger Dienelt
   • Tran T. H. Van

   OriginalPaper Pages: 279 - 288

6. Crystal Structure of the E-2,4-Dinitrophenylhydrazone of 2-Acetyl-3-phenyl-5-methylfuran

   • T. S. Balaban
   • M. O. Dekaprilevich
   • Yu. T. Struchkov

   OriginalPaper Pages: 289 - 293

7. Crystal Structures of Analogs of threo-Methylphenidate

   • Mark Froimowitz
   • Kuo-Ming Wu
   • Howard M. Deutsch

   OriginalPaper Pages: 295 - 303

8. Crystal and Molecular Structures of (E)-(2-Phenylethenyl)cyclooctatetraene and (E)-(2-(4-Nitrophenyl)ethenyl)cyclooctatetraene. Conformations of Substituted Cyclooctatetraenes

   • Matthew L. Peterson
   • Stuart W. Staley

   OriginalPaper Pages: 305 - 312

9. Book Reviews

   • Ned H. Martin
   • Pamela J. Seaton

   BookReview Pages: 313 - 314