scholarly journals Anomeric Effect in Five-Membered Ring Molecules: Comparison of Theoretical Computations and Experimental Spectroscopic Results

2020 ◽  
Author(s):  
Esther J. Ocola ◽  
Jaan Laane
Keyword(s):  
Membered Ring ◽  
Anomeric Effect ◽  
Ring Molecules

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...

A new set of puckering coordinates for four-membered ring molecules

1972 ◽  
Vol 42 (1) ◽  
pp. 112-126 ◽  
Author(s):  
F. Baltagi ◽  
A. Bauder ◽  
T. Ueda ◽  
Hs.H. Günthard
Keyword(s):  
Membered Ring ◽  
Ring Molecules

Soluble Pyridine Complexes Of The Ternary Gallium(III) Chalcogenide Halides (GaEX)3, With E = S, Se And X = Cl, Br

2001 ◽  
Vol 56 (8) ◽  
pp. 711-718 ◽  
Author(s):  
Stefan D. Nogai ◽  
Annette Schier ◽  
Hubert Schmidbaur
Keyword(s):  
Single Crystal ◽  
Molecular Complexes ◽  
Membered Ring ◽  
New Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pyridine Ligands ◽  
Ring Molecules ◽  
Gallium Metal ◽  
Convenient Preparation

The four ternary gallium(III) chalcogenide halides GaEX with E = S, Se and X = Cl, Br can be prepared a) from the binary gallium(III) chalcogenides Ga2E3 and halides Ga2X6, b) from gallium(I) tetrahalogallates(III) GafGaX4] and the chalcogen E, and c) from gallium metal and the dichalcogen dihalides E2X2. The new method c) was shown to be the most convenient preparation. The products are readily soluble in pyridine to give trinuclear molecular complexes [GaEX·Py]3 which are not volatile without decomposition, but can be purified by crystallization. The structures have been determined by single crystal X-ray diffraction techniques. The two chlorides are isostructural and show twisted tub-form six-membered ring molecules with the pyridine donors in axial positions. The two bromides are also isostructural, but with the pyridine ligands in two axial and one equatorial positions

Localized molecular orbital studies of three-, four-, five-, and six-membered ring molecules and ions formed from sulfur and nitrogen

1981 ◽  
Vol 103 (25) ◽  
pp. 7458-7465 ◽  
Author(s):  
A. A. Bhattacharyya ◽  
A. Bhattacharyya ◽  
R. R. Adkins ◽  
A. G. Turner
Keyword(s):  
Molecular Orbital ◽  
Membered Ring ◽  
Ring Molecules
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