Synthesis, spectral properties, crystal structures and antimicrobial effects of copper(II) pyridinecarboxylate adducts with chelating ligands

Polyhedron ◽  
2000 ◽  
Vol 19 (28) ◽  
pp. 2689-2695 ◽  
Author(s):  
Martina Palicová ◽  
Peter Segl'a ◽  
Dušan Mikloš ◽  
Miroslava Kopcová ◽  
Milan Melnı́k ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Spectral Properties ◽  
Chelating Ligands ◽  
Antimicrobial Effects

Syntheses, crystal structures and spectral properties of 1D tetracyanonickelate(II) complexes with 1-ethylimidazole

2013 ◽  
Vol 1048 ◽  
pp. 252-260 ◽  
Author(s):  
Fulya Çetinkaya ◽  
Güneş Süheyla Kürkçüoğlu ◽  
Okan Zafer Yeşilel ◽  
Tuncer Hökelek ◽  
Yasemin Süzen
Keyword(s):  
Crystal Structures ◽  
Spectral Properties

Effects of Φ-Stacking on the Absorption and Emission of Light by Conjugated Polymers and Oligomers

1999 ◽  
Vol 598 ◽  
Author(s):  
M. David Curtis ◽  
Amy Koren ◽  
Jeff W. Kampf
Keyword(s):  
Conjugated Polymers ◽  
Crystal Structures ◽  
Spectral Properties ◽  
Molecular Packing ◽  
Side Chains ◽  
Absorption And Emission ◽  
One Dimensional ◽  
Exciton Splitting

ABSTRACTWe have determined the crystal structures of regioregular HH-TT oligomers with a variety of side chains, including hydroxy-bearing side chains capable of H-bonding. The H-bonding orders the molecular packing into infinite 2-D sheets of Φ-stacks. In these H-bonded sheets, the Φ-stacks are insulated from each other by the aliphatic side chains and form one-dimensional “wires”. In contrast, the structures of similar oligomers that do not have H-bonded side-chains feature a structure in which neighboring Φ-stacks in are in contact (“shorted wires”). The effects of these differing molecular arrangements on the spectral properties and exciton splitting are discussed.

scholarly journals Synthesis and first X-ray structures of cobalt(II) and cobalt(III) complexes bearing 2,4-dioxo-alkanoic acid dialkylamide ligands

2009 ◽  
Vol 87 (1) ◽  
pp. 328-334 ◽  
Author(s):  
Jian Wang ◽  
Nicholas A Morra ◽  
Hongda Zhao ◽  
Jeffrey ST Gorman ◽  
Vincent Lynch ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Aerobic Oxidation ◽  
Synthetic Chemistry ◽  
Chelating Ligands ◽  
Alkanoic Acid ◽  
X Ray ◽  
X Ray Crystallography

The aerobic oxidation of 5-hydroxy pentenes to trans-tetrahydrofurans (THFs), the Mukaiyama oxidation, has in recent years emerged as a powerful tool in synthetic chemistry. In this report we describe the first crystal structures of 2,4-dioxo-alkanoic acid dialkylamide complexes for both Co(II) and Co(III) salts. The Co(II) structures show an unprecedented arrangement of atoms, with a central Co(II)(H2O)6 flanked by two Co(II) atoms each coordinated with three anionic chelating ligands. The dimeric Co(III) structures show two anionic chelating ligands and bridging hydroxyl groups.Key words: aerobic oxidation, trans-tetrahydrofuran (THF), cobalt, X-ray crystallography, oxidation, coordination.

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