Volume 84; Issue 6

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Helvetica Chimica Acta
Volume 84; Issue 6

Helvetica Chimica Acta

Volume 84; Issue 6

1

Wechselwirkungen in Kristallen, 176. Mitteilung , Redox-Reaktionen von Hexahydropyren: Kristallstrukturen seiner Radikalanion-Salze sowie von Trihydropyrenylium-tetrachloroaluminat und Dichtefunktionaltheorie-Berechnungen

Hans Bock, Rodney F. Claridge, Camelia Bogdan, Mark Sievert, Volker Krenzel

Journal:

Helvetica Chimica Acta

Year:

2001

File:

PDF, 343 KB

2001

2

Foil on Stamps on Foil and on Other Unusual Materials

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 256 KB

english, 2001

3

Synthesis of the Macrocyclic Spermidine Alkaloid (±)-(2R,3R)-3-Hydroxycelacinnine

Nikolai A. Khanjin, Manfred Hesse

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 168 KB

english, 2001

4

Comparative Supramolecular Chemistry of Coronene and Hexahelicene: Helix Alignment in Crystalline Complexes with Trimesic Acid (=Benzene-1,3,5-tricarboxylic Acid) and π-Acceptor Compounds

Otto Ermer, Jörg Neudörfl

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 833 KB

english, 2001

5

Avogadro and His Constant

John N. Murrell

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 99 KB

english, 2001

6

Quantum-Mechanical Energy Calculations in Chemistry

Libuše Šroubková, Rudolf Zahradník

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 111 KB

english, 2001

7

An Unusual Rearrangement and its Dependence on Configuration

Howard E. Zimmerman, Pengfei Wang

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 72 KB

english, 2001

8

Hydrolysis of tRNAPhe on Suspensions of Amino Acids

Kui Gao, Leslie E. Orgel

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 113 KB

english, 2001

9

The CO2 Trimer: Between Gas and Fluid Phase

Anthony J. Dyson, Hanspeter Huber

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 138 KB

english, 2001

10

Stereoselective Synthesis of 8-Oxabicyclo[3.2.1]octane-2,3,4,6,7-pentols and Total Asymmetric Synthesis of 2,6-Anhydrohepturonic Acid Derivatives and of β-C-manno-Pyranosides Suitable for the Construction of (1→3)-C,C-Linked Trisaccharides

Patrick Gerber, Pierre Vogel

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 405 KB

english, 2001

11

Demoniac Intervention in the Thermal Electrocyclic Ring Opening of Cyclobutenes: Fe(CO)3 Complexation of Pericyclic Transition Structures

Dean J. Tantillo, Roald Hoffmann

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 396 KB

english, 2001

12

Observable Enols of Anhydrides: Claimed Literature Systems, Calculations, and Predictions

Zvi Rappoport, Yi Xiong Lei, Hiroshi Yamataka

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 416 KB

english, 2001

13

The A 1Π(u)←X 1Σ Electronic Transition of CCN+ and CNC+

Muriel Wyss, Evgueni Riaplov, John P. Maier, Majdi Hochlaf, Pavel Rosmus

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 122 KB

english, 2001

14

Photochemical Reaction Mechanisms of 2-Nitrobenzyl Compounds in Solution, I. 2-Nitrotoluene: Thermodynamic and Kinetic Parameters of the aci-Nitro Tautomer

Markus Schwörer, Jakob Wirz

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 176 KB

english, 2001

15

Potential Energy Surfaces for the Na(3p)N2, Na(3p)HCN and Na(3p)C2H2 Complexes: Ab Initio Calculations and Model Considerations

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 130 KB

english, 2001

16

Influence of Ring Annelation on the Mode Selectivity of the Ionized Diazabicycloheptenes and Corresponding Housanes: An ESR and ENDOR Study

Fabian Gerson, Coşkun Şahin

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 196 KB

english, 2001

17

Theoretical Study of the Benzene Dimer by the Density-Functional-Theory Formalism Based on Electron-Density Partitioning

Fabien Tran, Jacques Weber, Tomasz A. Wesołowski

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 126 KB

english, 2001

18

Nucleosides, Part LXIV , Base-Labile Protecting Groups for the Oligoribonucleotide Synthesis

Ursula Münch, Wolfgang Pfleiderer

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 144 KB

english, 2001

19

Secododecahedradienes – Syntheses, Reactivity, in-Plane Homoconjugated 3C/2e Cations, 4C/3e Radical Cations, and σ-Bishomoaromatic 4C/2e Dications?

Jens Reinbold, Martin Bertau, Torsten Voss, Dieter Hunkler, Lothar Knothe, Horst Prinzbach, Dmytro Neschchadin, Georg Gescheidt, Bernhard Mayer, Hans-Dieter Martin, Jürgen Heinze, G. K. Surya Prakash,

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 583 KB

english, 2001

20

Solid-State Behaviour of the Dichlorobenzenes: Actual, Semi-Virtual and Virtual Crystallography

Roland Boese, Michael T. Kirchner, Jack D. Dunitz, Giuseppe Filippini, Angelo Gavezzotti

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 197 KB

english, 2001

21

Are the Six-Membered λ5-Phosphorins Aromatic or Ylidic?

Zhi-Xiang Wang, Paul von Ragué Schleyer

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 286 KB

english, 2001

22

Photolabile Protecting Groups for Nucleosides: Mechanistic Studies of the 2-(2-Nitrophenyl)ethyl Group

Stefan Walbert, Wolfgang Pfleiderer, Ulrich E. Steiner

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 127 KB

english, 2001

23

A Reinvestigation of the Structure and Torsional Potential of N2O5 by Gas-Phase Electron Diffraction Augmented by Ab Initio Theoretical Calculations

Bruce M. McClelland, Alan D. Richardson, Kenneth Hedberg

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 173 KB

english, 2001

24

Single and Double Ionization of Corannulene and Coronene

Detlef Schröder, Jessica Loos, Helmut Schwarz, Roland Thissen, Dorin V. Preda, Lawrence T. Scott, Doina Caraiman, Maxim V. Frach, Diethard K. Böhme

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 94 KB

english, 2001

25

Exploiting the Confined Reactivity of C2v-Symmetrical Pentakis-Adducts of [60]Fullerene: Regioselective Formation of Hexakis-, Heptakis-, and Octakis-Adducts with Novel Addition Patterns by Addition of Diazomethane Followed by Dinitrogen Extrusion

Richard F. Haldimann, Christian Fokas, François Diederich

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 310 KB

english, 2001

26

Dimerization of C60: Symmetry Considerations

Emil Amitai Halevi

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 97 KB

english, 2001

27

Spiro[4.4]nonatetraene and its Positive and Negative Radical Ions: Molectronic Structure Investigations

Edwin Haselbach, Michael Allan, Thomas Bally, Pawel Bednarek, Anne-Christelle Sergenton, Armin de Meijere, Sergej Kozhushkov, Manuel Piacenza, Stefan Grimme

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 215 KB

english, 2001

28

Self-Assembly of Tricuprous Double Helicates: Thermodynamics, Kinetics, and Mechanism

Nicolas Fatin-Rouge, Sylvie Blanc, Armin Pfeil, Annie Rigault, Anne-Marie Albrecht-Gary, Jean-Marie Lehn

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 180 KB

english, 2001

29

Surprising Formation of Highly Substituted Azulenes on Thermolysis of 4,5,6,7,8-Pentamethyl-2H-cyclohepta[b]furan-2-one and Heptalene Formation with the New Azulenes

Vit Lellek, Hans-Jürgen Hansen

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 350 KB

english, 2001

30

On the π-Electron Distribution in Biphenylene Analogues

Werner Andres, Harald Günther, Maria-Eugenia Günther, Heike Hausmann, Günther Jikeli, Henning von Puttkamer, Hans Schmickler, Jier Niu-Schwarz, W. H. Eugen Schwarz

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 211 KB

english, 2001

31

New Optically Active 2H-Azirin-3-amines as Synthons for Enantiomerically Pure 2,2-Disubstituted Glycines

Kathrin A. Brun, Anthony Linden, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 261 KB

english, 2001

32

Pentopyranosyl Oligonucleotide Systems, Communication No. 10 , The α-L-Lyxopyranosyl-(4′→2′)-oligonucleotide System

Folkert Reck, Harald Wippo, René Kudick, Ramanarayanan Krishnamurthy, Albert Eschenmoser

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 347 KB

english, 2001

33

Cycloadditions of `Thiocarbonyl Ylides' with Tetracyanoethylene (=Ethenetetracarbonitrile): Interception of Intermediates

Rolf Huisgen, Grzegorz Mloston, Elke Langhals

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 169 KB

english, 2001

34

On the Solution Structure of PHB: Preparation and NMR Analysis of Isotopically Labeled Oligo[(R)-3-hydroxybutanoic Acids] (OHBs)

Peter Waser, Magnus Rueping, Dieter Seebach, Elke Duchardt, Harald Schwalbe

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 357 KB

english, 2001

35

Mode Selective Stereomutation and Parity Violation in Disulfane Isotopomers H2S2, D2S2, T2S2

Michael Gottselig, David Luckhaus, Martin Quack, Jürgen Stohner, Martin Willeke

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 146 KB

english, 2001

36

Oligosaccharide Analogues of Polysaccharides, Part 22 , Synthesis of Cyclodextrin Analogues Containing a Buta-1,3-diyne-1,4-diyl or a Butane-1,4-diyl Unit

Barbara Hoffmann, Diana Zanini, Isabelle Ripoche, Roland Bürli, Andrea Vasella

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 366 KB

english, 2001

37

Molecular Motions in Crystalline Anthracene and Naphthalene from Multitemperature Diffraction Data

Hans-Beat Bürgi, Narayanan Rangavittal, Jürg Hauser

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 173 KB

english, 2001

38

Oriented Nonspherical Atoms in Crystals Deduced from X-Ray Scattering Data

Lance L. Miller, Robert A. Jacobson, Klaus Ruedenberg, Jier Niu, W. H. Eugen Schwarz

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 333 KB

english, 2001

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