1. Perturbation theory of nonbonding orbitals in polymeric dyes

   • G. G. Dyadyusha
   • A. D. Kachkovskii
   • M. L. Dekhtyar'

   OriginalPaper Pages: 251 - 256

2. Quantum-chemical study of the electronic structure of adsorption complexes of molecular nitrogen with iron by the Xα-SW method

   • A. G. Guzikevich
   • A. A. Chuiko
   • V. K. Yatsimirskii

   OriginalPaper Pages: 257 - 267

3. Problem of ambivalence in organic reactions

   • S. V. Volovik

   OriginalPaper Pages: 268 - 274

4. Topological structure of mechanisms of complex reactions

   • O. N. Temkin
   • L. G. Bruk
   • D. Bonchev

   OriginalPaper Pages: 275 - 284

5. Quantum-chemical investigation of the triplet-triplet absorption in photochromic indolinespiropyrans

   • V. N. Lisyutenko
   • V. A. Barachevskii

   OriginalPaper Pages: 284 - 291

6. Direct effects of an alkali promoter on carbon monoxide chemisorption

   • S. G. Gagarin
   • Yu. A. Teterin

   OriginalPaper Pages: 292 - 297

7. X-ray spectral study on valency-electron distributions in compounds in the V₂O₅-MoO₃ system

   • V. V. Shumilov
   • V. M. Cherkashenko
   • M. Ya. Khodos

   OriginalPaper Pages: 298 - 303

8. Vibrational spectrum and structure of nitrosothiocarbamylcyanomethanide ion

   • V. D. Khavryuchenko
   • O. A. Domashevskaya
   • V. V. Skopenko

   OriginalPaper Pages: 303 - 309

9. Effects of carbonyl-group geometrical parameters on carboxylic-acid dissociation constants in aqueous solution

   • M. Yu. Gorbachev
   • I. B. Bersuker

   OriginalPaper Pages: 309 - 314

10. Time-resolved CIDNP effects in the reaction of hydrogen atom transfer in photolysis of benzaldehyde in solution

    • Yu. P. Tsentalovich
    • A. A. Obynochnyi
    • P. Burkhard

    OriginalPaper Pages: 314 - 319

11. Influence of weak magnetic fields and UHF radiation on certain dielectric and optical properties of water and aqueous solutions

    • V. F. Kiselev
    • A. M. Saletskii
    • L. P. Semikhina

    OriginalPaper Pages: 319 - 323

12. Influence of substituents in pyrrole rings on electronic structure and molecular electrostatic potentials of porphyrins

    • V. Ya. Zayats
    • V. M. Pinchuk
    • V. V. Lobanov

    Brief Communications Pages: 324 - 328

13. Stereochemical and electronic structure of the free base, cation, and dication of porphin

    • V. Ya. Zayats
    • V. V. Lobanov
    • V. M. Pinchuk

    Brief Communications Pages: 328 - 331

14. Electronic structure of titanium and niobium carbides with beryllium impurity

    • A. L. Ivanovskii
    • V. I. Anisimov
    • V. A. Gubanov

    Brief Communications Pages: 332 - 337

15. Photoelectron spectra and electronic structure of VF₅ and VOF₃

    • V. I. Vovna
    • I. A. Topol'
    • V. A. Koshelev

    Brief Communications Pages: 337 - 342

16. Spectral-luminescence properties and structure of oxazolepyridinium salts

    • I. P. Krainov
    • E. G. Protsenko
    • V. F. Morina

    Brief Communications Pages: 343 - 346

17. Relation between hydration and ionophoric activity of leukotriene B₄

    • V. E. Khutorskii
    • I. E. Shchechkin
    • V. P. Kukhar'

    Brief Communications Pages: 346 - 350

18. Solvation of tetraphenylphosphonium dicyanamide

    • S. V. Garbuz
    • V. V. Skopenko
    • A. M. Shakhvorost

    Brief Communications Pages: 351 - 355

19. Rules for selection of oxide catalysts for oxidative dehydrocombination of hydrocarbons

    • É. A. Mamedov

    Brief Communications Pages: 356 - 359

20. Structure and properties of the smectic phase in a mesogenic complex of copper with a schiff base

    • I. G. Bikchantaev
    • R. M. Galimov
    • I. V. Ovchinnikov

    Brief Communications Pages: 360 - 364

21. ¹³C and ¹H NMR studies on conformally mobile and rigid thiophene-series ANSA structures

    • R. Durdyev
    • A. V. Kessenikh
    • F. D. Alashev

    Brief Communications Pages: 365 - 370

22. MFTIR spectra of polyethylene synthesized on germanium surfaces

    • A. N. Krasovskii
    • P. P. Nefedov
    • N. I. Mironov

    Brief Communications Pages: 370 - 373