Works matching IS 0018019X AND DT 2001 AND VI 84 AND IP 6

Results: 38

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1578, doi. 10.1002/1522-2675(20010613)84:6<1578::AID-HLCA1578>3.0.CO;2-F

By:

Wang, Zhi-Xiang;
Schleyer, Paul von Ragué

Publication type:

Article

Avogadro and His Constant.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1314, doi. 10.1002/1522-2675(20010613)84:6<1314::AID-HLCA1314>3.0.CO;2-Q

By:

Murrell, John N.

Publication type:

Article

Hydrolysis of tRNAPhe on Suspensions of Amino Acids.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1347, doi. 10.1002/1522-2675(20010613)84:6<1347::AID-HLCA1347>3.0.CO;2-2

By:

Gao, Kui;
Orgel, Leslie E.

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1805, doi. 10.1002/1522-2675(20010613)84:6<1805::AID-HLCA1805>3.0.CO;2-T

By:

Huisgen, Rolf;
Mloston, Grzegorz;
Langhals, Elke

Publication type:

Article

Dimerization of C60: Symmetry Considerations.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1661, doi. 10.1002/1522-2675(20010613)84:6<1661::AID-HLCA1661>3.0.CO;2-G

By:

Halevi, Emil Amitai

Publication type:

Article

Molecular Motions in Crystalline Anthracene and Naphthalene from Multitemperature Diffraction Data.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1889, doi. 10.1002/1522-2675(20010613)84:6<1889::AID-HLCA1889>3.0.CO;2-Q

By:

Bürgi, Hans-Beat;
Rangavittal, Narayanan;
Hauser, Jürg

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1694, doi. 10.1002/1522-2675(20010613)84:6<1694::AID-HLCA1694>3.0.CO;2-T

By:

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

Publication type:

Article

Single and Double Ionization of Corannulene and Coronene.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1625, doi. 10.1002/1522-2675(20010613)84:6<1625::AID-HLCA1625>3.0.CO;2-0

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1504, doi. 10.1002/1522-2675(20010613)84:6<1504::AID-HLCA1504>3.0.CO;2-G

By:

Münch, Ursula;
Pfleiderer, Wolfgang

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1470, doi. 10.1002/1522-2675(20010613)84:6<1470::AID-HLCA1470>3.0.CO;2-W

By:

Gerson, Fabian;
Şahin, Coşkun

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1441, doi. 10.1002/1522-2675(20010613)84:6<1441::AID-HLCA1441>3.0.CO;2-W

By:

Schwörer, Markus;
Wirz, Jakob

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1405, doi. 10.1002/1522-2675(20010613)84:6<1405::AID-HLCA1405>3.0.CO;2-G

By:

Rappoport, Zvi;
Lei, Yi Xiong;
Yamataka, Hiroshi

Publication type:

Article

An Unusual Rearrangement and its Dependence on Configuration.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1342, doi. 10.1002/1522-2675(20010613)84:6<1342::AID-HLCA1342>3.0.CO;2-W

By:

Zimmerman, Howard E.;
Wang, Pengfei

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1489, doi. 10.1002/1522-2675(20010613)84:6<1489::AID-HLCA1489>3.0.CO;2-D

By:

Tran, Fabien;
Weber, Jacques;
Wesołowski, Tomasz A.

Publication type:

Article

Foil on Stamps on Foil and on Other Unusual Materials.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1243, doi. 10.1002/1522-2675(20010613)84:6<1243::AID-HLCA1243>3.0.CO;2-W

By:

Miller, Foil A.

Publication type:

Article

Quantum-Mechanical Energy Calculations in Chemistry.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1328, doi. 10.1002/1522-2675(20010613)84:6<1328::AID-HLCA1328>3.0.CO;2-0

By:

Šroubková, Libuše;
Zahradník, Rudolf

Publication type:

Article

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.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1862, doi. 10.1002/1522-2675(20010613)84:6<1862::AID-HLCA1862>3.0.CO;2-Z

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1907, doi. 10.1002/1522-2675(20010613)84:6<1907::AID-HLCA1907>3.0.CO;2-B

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1712, doi. 10.1002/1522-2675(20010613)84:6<1712::AID-HLCA1712>3.0.CO;2-E

By:

Lellek, Vit;
Hansen, Hans-Jürgen

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1756, doi. 10.1002/1522-2675(20010613)84:6<1756::AID-HLCA1756>3.0.CO;2-J

By:

Brun, Kathrin A.;
Linden, Anthony;
Heimgartner, Heinz

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1778, doi. 10.1002/1522-2675(20010613)84:6<1778::AID-HLCA1778>3.0.CO;2-3

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1635, doi. 10.1002/1522-2675(20010613)84:6<1635::AID-HLCA1635>3.0.CO;2-Z

By:

Haldimann, Richard F.;
Fokas, Christian;
Diederich, François

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1561, doi. 10.1002/1522-2675(20010613)84:6<1561::AID-HLCA1561>3.0.CO;2-M

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1518, doi. 10.1002/1522-2675(20010613)84:6<1518::AID-HLCA1518>3.0.CO;2-R

By:

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

Publication type:

Article

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.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1363, doi. 10.1002/1522-2675(20010613)84:6<1363::AID-HLCA1363>3.0.CO;2-M

By:

Gerber, Patrick;
Vogel, Pierre

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1459, doi. 10.1002/1522-2675(20010613)84:6<1459::AID-HLCA1459>3.0.CO;2-J

By:

Jungen, Martin

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1396, doi. 10.1002/1522-2675(20010613)84:6<1396::AID-HLCA1396>3.0.CO;2-Z

By:

Tantillo, Dean J.;
Hoffmann, Roald

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1253, doi. 10.1002/1522-2675(20010613)84:6<1253::AID-HLCA1253>3.0.CO;2-U

By:

Khanjin, Nikolai A.;
Hesse, Manfred

Publication type:

Article

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.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1268, doi. 10.1002/1522-2675(20010613)84:6<1268::AID-HLCA1268>3.0.CO;2-Z

By:

Ermer, Otto;
Neudörfl, Jörg

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1821, doi. 10.1002/1522-2675(20010613)84:6<1821::AID-HLCA1821>3.0.CO;2-C

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1670, doi. 10.1002/1522-2675(20010613)84:6<1670::AID-HLCA1670>3.0.CO;2-K

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1601, doi. 10.1002/1522-2675(20010613)84:6<1601::AID-HLCA1601>3.0.CO;2-S

By:

Walbert, Stefan;
Pfleiderer, Wolfgang;
Steiner, Ulrich E.

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1612, doi. 10.1002/1522-2675(20010613)84:6<1612::AID-HLCA1612>3.0.CO;2-K

By:

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

Publication type:

Article

On the π-Electron Distribution in Biphenylene Analogues.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1737, doi. 10.1002/1522-2675(20010613)84:6<1737::AID-HLCA1737>3.0.CO;2-H

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1432, doi. 10.1002/1522-2675(20010613)84:6<1432::AID-HLCA1432>3.0.CO;2-S

By:

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

Publication type:

Article

The CO2 Trimer: Between Gas and Fluid Phase.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1355, doi. 10.1002/1522-2675(20010613)84:6<1355::AID-HLCA1355>3.0.CO;2-C

By:

Dyson, Anthony J.;
Huber, Hanspeter

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1846, doi. 10.1002/1522-2675(20010613)84:6<1846::AID-HLCA1846>3.0.CO;2-F

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 6, p. 1227, doi. 10.1002/1522-2675(20010613)84:6<1227::AID-HLCA1227>3.0.CO;2-C

By:

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

Publication type:

Article

Works matching IS 0018019X AND DT 2001 AND VI 84 AND IP 6

Are the Six-Membered λ<sup>5</sup>-Phosphorins Aromatic or Ylidic?

Avogadro and His Constant.

Hydrolysis of tRNA<sup>Phe</sup> on Suspensions of Amino Acids.

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

Dimerization of C<sub>60</sub>: Symmetry Considerations.

Molecular Motions in Crystalline Anthracene and Naphthalene from Multitemperature Diffraction Data.

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

Single and Double Ionization of Corannulene and Coronene.

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

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

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

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

An Unusual Rearrangement and its Dependence on Configuration.

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

Foil on Stamps on Foil and on Other Unusual Materials.

Quantum-Mechanical Energy Calculations in Chemistry.

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.

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

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

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

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

Exploiting the Confined Reactivity of C<sub>2v</sub>-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

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

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

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.

Potential Energy Surfaces for the Na(3p)N<sub>2</sub>, Na(3p)HCN and Na(3p)C<sub>2</sub>H<sub>2</sub> Complexes: Ab Initio Calculations and Model Considerations.

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

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

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.

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

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

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

A Reinvestigation of the Structure and Torsional Potential of N<sub>2</sub>O<sub>5</sub> by Gas-Phase Electron Diffraction Augmented by Ab Initio Theoretical Calculations.

On the π-Electron Distribution in Biphenylene Analogues.

The A <sup>1</sup> Π<sub>(u)</sub>←X <sup>1</sup> Σ Electronic Transition of CCN<sup>+</sup> and CNC<sup>+</sup>.

The CO<sub>2</sub> Trimer: Between Gas and Fluid Phase.

Mode Selective Stereomutation and Parity Violation in Disulfane Isotopomers H<sub>2</sub>S<sub>2</sub>, D<sub>2</sub>S<sub>2</sub>, T<sub>2</sub>S<sub>2</sub>.

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