The Alkylation of Naphthalene over One-Dimensional Fourteen-Membered Ring Zeolites. The Influence of Zeolite Structure and Alkylating Agent on the Selectivity for Dialkylnaphthalenes

2008 ◽  
Vol 81 (9) ◽  
pp. 1166-1174 ◽  
Author(s):  
Yoshihiro Sugi ◽  
Hiroyoshi Maekawa ◽  
Hiroaki Naiki ◽  
Kenichi Komura ◽  
Yoshihiro Kubota
Keyword(s):  
Alkylating Agent ◽  
Membered Ring ◽  
One Dimensional ◽  
Zeolite Structure

The Alkylation of Biphenyl over Fourteen-Membered Ring Zeolites. The Influence of Zeolite Structure and Alkylating Agent on the Selectivity for 4,4′-Dialkylbiphenyl

2007 ◽  
Vol 80 (7) ◽  
pp. 1418-1428 ◽  
Author(s):  
Yoshihiro Sugi ◽  
Hiroyoshi Maekawa ◽  
Shafeek Abdul Rashid Mulla ◽  
Akira Ito ◽  
Chikayo Naitoh ◽  
...  
Keyword(s):  
Alkylating Agent ◽  
Membered Ring ◽  
Zeolite Structure

First-principles study of carbon nanothreads derived from five-membered heterocyclic rings: thiophene, furan and pyrrole

2020 ◽  
Author(s):  
Pedro Guerra Demingos ◽  
Naira Maria Balzaretti ◽  
André Muniz
Keyword(s):  
First Principles ◽  
Membered Ring ◽  
One Dimensional ◽  
Aromatic Molecules ◽  
First Principles Study ◽  
Ring Molecules

Carbon nanothreads are one-dimensional materials obtained by controlled compression of aromatic molecules. Benzene and other six-membered ring molecules are normally used as precursors, but recent experiments have shown that carbon...

scholarly journals Bis(propane-1,3-diamine)disaccharinatonickel(II)

2012 ◽  
Vol 68 (4) ◽  
pp. m425-m426 ◽  
Author(s):  
Gökhan Kaştaş ◽  
Can Kocabıyık
Keyword(s):  
Metal Ion ◽  
Crystal Packing ◽  
Chair Conformation ◽  
Membered Ring ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Inversion Center ◽  
One Dimensional ◽  
Dimensional Network ◽  
Distorted Octahedral

In the title complex, [Ni(C7H4NO3S)2(C3H10N2)2] or [Ni(sac)2(pen)2] (sac = saccharinate or 1,1,3-trioxo-2,3-dihydro-1λ6,2-benzothiazol-2-ide and pen = propane-1,3-diamine), the NiIIion sits on an inversion center, being coordinated by two N atoms of the sac ligands, which occupytranspositions, and four N atoms of the bidentate pen ligands to define a distorted octahedral geometry. The pen ligands chelate the metal ion, forming a six-membered ring which adopts a half-chair conformation, while the sac ligands adopt the most common coordination mode. The crystal packing is stabilized by N—H...O hydrogen bonds, which form a one-dimensional network along [010]. It is also supported by an N—H...S hydrogen bond between the amine group of the pen ligand and the sulfonyl group of the sac ligand.

A New Microporous Silicate With 12-Ring Channels

2000 ◽  
Vol 658 ◽  
Author(s):  
Jacques Plévert ◽  
Yoshihiro Kubota ◽  
Takahisa Honda ◽  
Tatsuya Okubo ◽  
Yoshihiro Sugi
Keyword(s):  
Organic Compound ◽  
Structure Determination ◽  
Molecular Sieve ◽  
Membered Ring ◽  
Hydrothermal Conditions ◽  
Structure Directing Agent ◽  
One Dimensional

ABSTRACTA new molecular sieve GUS-1 is synthesized under hydrothermal conditions using a new organic compound acting as structure-directing agent. The structure determination reveals a framework with one-dimensional 12-membered ring channels running parallel. The structure exhibits the same channel net as zeolite ZSM-12 and shows the same projection of the framework along the pores as mordenite.

Methyl 4-O-pivaloyl-β-D-xylopyranoside

2006 ◽  
Vol 62 (7) ◽  
pp. o2746-o2748
Author(s):  
Vesna Petrović ◽  
Ivan Halasz ◽  
Srđanka Tomić ◽  
Dubravka Matković Čalogović
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Hydroxyl Groups ◽  
Equatorial Position ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Compound C

The six-membered ring of the title compound, C11H20O6, adopts the chair conformation, with the 4-O-pivaloyl group in an equatorial position. Two vicinal hydroxyl groups of each molecule form four hydrogen bonds of the O—H...O type in a one-dimensional chain running along the b axis.

The alkylation of naphthalene over three-dimensional large pore zeolites: The influence of zeolite structure and alkylating agent on the selectivity for dialkylnaphthalenes

2008 ◽  
Vol 132 (1-4) ◽  
pp. 27-37 ◽  
Author(s):  
Yoshihiro Sugi ◽  
Hiroyoshi Maekawa ◽  
Yukio Hasegawa ◽  
Hiroaki Naiki ◽  
Kenichi Komura ◽  
...  
Keyword(s):  
Alkylating Agent ◽  
Three Dimensional ◽  
Zeolite Structure ◽  
Large Pore ◽  
Large Pore Zeolites
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