Sandro Hollenstein: search on Z-Library

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1

Stable Ion Studies of the Chrysene Skeleton. Protonation of Chrysene, 6-Halochrysenes, 6-Acetylchrysene, and 4 H -Cyclopenta[ def ]chrysene: NMR Studies of Charge Distribution in Chrysenium Cations and AM1 Calculations

Laali, Kenneth K., Hollenstein, Sandro, Harvey, Ronald G., Hansen, Poul Erik

Journal:

Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 213 KB

english, 1997

2

X-Ray Structure Analysis of an Iminium Ion Generated by Grob Fragmentation

Dipl.-Chem. Sandro Hollenstein, Priv.-Doz. Thomas Laube

Journal:

Angewandte Chemie International Edition

Year:

1990

Language:

english

File:

PDF, 248 KB

english, 1990

3

X-Ray Crystal Structure of the 2-Phenyladamant-2-yl Cation

Thomas Laube, Sandro Hollenstein

Journal:

Helvetica Chimica Acta

Year:

1994

Language:

english

File:

PDF, 626 KB

english, 1994

4

Struktur des Zwischenproduktes einer (i-PrO)2 TiMe2-Methylierung: NMR-Untersuchungen und Konformationsanalyse

Sandro Hollenstein, Manfred Hesse

Journal:

Helvetica Chimica Acta

Year:

1996

File:

PDF, 878 KB

1996

5

Crystal structures of two activated cyclohexanones with opposite pyramidalizations of the carbonyl groups

Laube, Thomas, Hollenstein, Sandro

Journal:

Journal of the American Chemical Society

Year:

1992

Language:

english

File:

PDF, 1.96 MB

english, 1992

6

Dependence of 1H and 13C NMR chemical shifts on the PAH∶FSO3H ratios for 4H-cyclopenta[def ]phenanthrenium and pyrenium cations in SO2ClF. Possible existence of cation–anion interactions and coexistence of PAHH+–PAH †

Hollenstein, Sandro, K. Laali, Kenneth

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1999

Language:

english

File:

PDF, 170 KB

english, 1999

7

Probing the charge delocalization mode in methyl-, dimethyl- and methylene-bridged phenanthrenium ions. NMR studies of persistent mono- and di-cations and AM1 calculations

Laali, Kenneth K., Hollenstein, Sandro, Hansen, Poul Erik

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1997

Language:

english

File:

PDF, 603 KB

english, 1997

8

Superacid protonation of dihydrocyclobuta[e]pyrene and its C60–o-quinodimethane adduct. An NMR, ab initio/GIAO and AM1/PM3 study

Laali, Kenneth K., Hollenstein, Sandro, Galembeck, Sergio E., Nakamura, Yosuke, Nishimura, Jun

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1999

Language:

english

File:

PDF, 151 KB

english, 1999

9

ChemInform Abstract: Stable Ion Study of Protonated Cyclopenta[a]phenanthrenes. Structure—Reactivity Relationships and Charge Delocalization in the Carbocations.

Kenneth K. Laali, Sandro Hollenstein, Sergio E. Galembeck, Maurice M. Coombs

Journal:

Year:

2000

File:

PDF, 30 KB

2000

10

Charge delocalization from cationic substituents into phenanthrene: variation in response among regioisomeric carbocations and carboxonium ions

Laali, Kenneth K., Hollenstein, Sandro

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1998

Language:

english

File:

PDF, 188 KB

english, 1998

11

Crystal structure of the tert-butyl cation

Hollenstein, Sandro, Laube, Thomas

Journal:

Journal of the American Chemical Society

Year:

1993

Language:

english

File:

PDF, 1.41 MB

english, 1993

12

Efficient conversion of 9-Isopropenylphenanthrene to 4,6,6-trimethyl-6H-benz[de]anthracene in FSO3H; 5,6-dihydro-4H-benzanthracen-4-ium ion and its charge delocalization mode

Hollenstein, Sandro, Laali, Kenneth K.

Journal:

Chemical Communications

Year:

1997

Language:

english

File:

PDF, 63 KB

english, 1997

13

The X-ray Crystal Structure Analysis of a Fragmentable N-Acylpyridinium Ion

Dipl.-Chem. Christian Lohse, Dipl.-Chem. Sandro Hollenstein, Priv.-Doz. Dr. Thomas Laube

Journal:

Angewandte Chemie International Edition

Year:

1991

Language:

english

File:

PDF, 365 KB

english, 1991

14

Superacid-Catalyzed Dimerization/Cyclization of Isopropenyl-PAHs – Novel Pathways to PAH Dimers, Phenalenes and Their Stable Carbocations

Cédric Brulé, Fatima Sultana, Sandro Hollenstein, Takao Okazaki, Kenneth K. Laali

Journal:

European Journal of Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 227 KB

english, 2008

15

Stable ion study of protonated cyclopenta[a]phenanthrenes. Structure–reactivity relationships and charge delocalization in the carbocations †

Laali, Kenneth K., Hollenstein, Sandro, Galembeck, Sergio E., Coombs, Maurice M.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

2000

Language:

english

File:

PDF, 359 KB

english, 2000

16

Persistent α-CF 3 -Substituted (1-Pyrenyl)dimethyl-, (1-Pyrenyl)phenylmethyl-, (4-Pyrenyl)dimethyl-, and (9-Phenanthrenyl)dimethylcarbenium Ions: Enhancing Arenium Ionic Character by Increasing Electron Demand at the Carbocation

Laali, Kenneth K., Tanaka, Mutsuo, Hollenstein, Sandro, Cheng, Michael

Journal:

Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 203 KB

english, 1997

17

ChemInform Abstract: Novel Cations and Molecules from Phosphaalkynes, 1H-Phosphirenes and from Tetraphosphacubane

Kenneth K. Laali, Bernhard Geissler, Andreas Hoffmann, Wolfgang Fiedler, Thomas Mackewitz, Jurgen Simon, Sandro Hollenstein, Manfred Regitz

Journal:

Year:

2000

File:

PDF, 25 KB

2000

18

Röntgenstrukturanalyse eines durch eine Grob-Fragmentierung erzeugten Iminium-Ions

Priv.-Doz. Dr. Sandro Hollenstein, Thomas Laube

Journal:

Angewandte Chemie

Year:

1990

Language:

german

File:

PDF, 245 KB

german, 1990

19

Chlorine back-donation in the crystal structure of a chloro-substituted carbocation

Laube, Thomas, Bannwart, Ewald, Hollenstein, Sandro

Journal:

Journal of the American Chemical Society

Year:

1993

Language:

english

File:

PDF, 320 KB

english, 1993

20

Novel Cations and Molecules from Phosphaalkynes, 1H-Phosphirenes and from Tetraphosphacubane

Laali, Kenneth K., Geissler, Bernhard, Hoffmann, Andreas, Fiedler, Wolfgang, Mackewitz, Thomas, Simon, Jürgen, Hollenstein, Sandro, Regitz, Manfred

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

1999

Language:

english

File:

PDF, 161 KB

english, 1999

21

Kristallstrukturanalyse eines fragmentierbaren N-Acylpyridinium-Ions

Christian Lohse, Sandro Hollenstein, Priv.-Doz. Dr. Thomas Laube

Journal:

Angewandte Chemie

Year:

1991

File:

PDF, 257 KB

1991

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