Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 7 of 7
Full-Text Articles in Entire DC Network
Simple Braids For Surface Homeomorphisms, Kamlesh Parwani
Simple Braids For Surface Homeomorphisms, Kamlesh Parwani
Faculty Research and Creative Activity
Let S be a compact, oriented surface with negative Euler characteristic and f:S→S be a homeomorphism isotopic to the identity. If there exists a periodic orbit with a non-zero rotation vector (p→,q), then there exists a simple braid with the same rotation vector.
Simple Braids For Surface Homeomorphisms, Kamlesh Parwani
Simple Braids For Surface Homeomorphisms, Kamlesh Parwani
Faculty Research and Creative Activity
Let S be a compact, oriented surface with negative Euler characteristic and f:S→S be a homeomorphism isotopic to the identity. If there exists a periodic orbit with a non-zero rotation vector (p→,q), then there exists a simple braid with the same rotation vector.
Bis(1,2-DihydroxyBenzene) HexaMethylEneTetraMine, Philias Daka, Kraig A. Wheeler
Bis(1,2-DihydroxyBenzene) HexaMethylEneTetraMine, Philias Daka, Kraig A. Wheeler
Faculty Research and Creative Activity
The title binary complex, 2C6H6O2·C6H12N4, is constructed from hexamethylenetetramine, positioned about a twofold symmetry operator, and 1,2-dihydroxybenzene. Each of the four tertiary amine N atoms participates in O—H⋯N contacts that produce molecular strands that propagate along the c axis.
(Acetonitrile-Κn){2-[Bis(2-Pyridylethyl)Amino]Ethanol-Κ4n,N′,N′′,O}Zinc(Ii) Bis(Perchlorate) Monohydrate, Hong-Chang Liang, Marcel M. Hetu, Kraig A. Wheeler, Lev N. Zakharov, Arnold L. Rheingold
(Acetonitrile-Κn){2-[Bis(2-Pyridylethyl)Amino]Ethanol-Κ4n,N′,N′′,O}Zinc(Ii) Bis(Perchlorate) Monohydrate, Hong-Chang Liang, Marcel M. Hetu, Kraig A. Wheeler, Lev N. Zakharov, Arnold L. Rheingold
Faculty Research and Creative Activity
In the title compound, [Zn(C2H3N)(C16H21N3O)](ClO4)2·H2O, the ZnII ion is coordinated by two pyridyl N atoms, one amine N atom, and an ethanol O atom from the N,N′,N′′,O-tetradentate 2-[bis(2-pyridylethyl)amino]ethanol donor ligand. The fifth coordination site is filled by an acetonitrile N atom, and there is one solvent water molecule in the asymmetric unit. The 2+ charge of the cationic portion of the complex is balanced by two perchlorate counter-anions.
N-(2-Aminobenzyl)-N,N-Bis(Quinolin- 2-Ylmethyl)Amine, Abhijit Mitra, Pamela J. Seaton, Kraig A. Wheeler
N-(2-Aminobenzyl)-N,N-Bis(Quinolin- 2-Ylmethyl)Amine, Abhijit Mitra, Pamela J. Seaton, Kraig A. Wheeler
Faculty Research and Creative Activity
The title new diquinaldine derivative, C27H24N4, forms molecular assemblies organized by intermolecular quinoline π–π stacking [3.356 (3) and 3.440 (3) Å] and both inter- and intramolecular N—H⋯N hydrogen bonds [3.039 (3)–3.104 (3) Å and 129 (2)–172 (2)°]. The combination of such interactions provides readily definable contacts that propagate along each crystallographic axis.
Strychninium (S)-2-(2-BromoPhenOxy)Propanoate 1.4-Hydrate, Kraig A. Wheeler, Aaron M. Lineberry
Strychninium (S)-2-(2-BromoPhenOxy)Propanoate 1.4-Hydrate, Kraig A. Wheeler, Aaron M. Lineberry
Faculty Research and Creative Activity
In the title molecular salt, C21H23N2O2+·C9H8BrO3−·1.4H2O, the components are linked by intermolecular C—O−⋯H—+N and OW—H⋯O interactions.
A Molecular Salt Of Tricyanomethanide Anion And A N,N9- Dianisylphenazinium Dication: Cooperative Affects Of Methoxy…Methoxy And Cmn…N+ Intermolecular Contacts, Scott E. Mckay, Kraig A. Wheeler, Silas C. Blackstock
A Molecular Salt Of Tricyanomethanide Anion And A N,N9- Dianisylphenazinium Dication: Cooperative Affects Of Methoxy…Methoxy And Cmn…N+ Intermolecular Contacts, Scott E. Mckay, Kraig A. Wheeler, Silas C. Blackstock
Faculty Research and Creative Activity
A molecular salt of tricyanomethanide anion and a N,N9- dianisylphenazinium dication forms extended supramolecular assemblies that consist of unusual methoxy…methoxy and CMN…N+ intermolecular contacts.