The role of the tosyl group in the coordination ability of N-protected amino acids. 1. Solid-state behavior of (N-tosylglycinato)copper(II) complexes: crystal and molecular structures of (N-tosylglycinato)triaquacopper(II) and dipotassium bis(N-tosylglycinato)cuprate(II) complexes

1983 ◽  
Vol 105 (13) ◽  
pp. 4327-4332 ◽  
Author(s):  
L. Antolini ◽  
L. P. Battaglia ◽  
G. Battistuzzi Gavioli ◽  
A. Bonamartini Corradi ◽  
G. Grandi ◽  
...  
Keyword(s):  
Amino Acids ◽  
Solid State ◽  
Molecular Structures ◽  
State Behavior ◽  
Crystal And Molecular Structures ◽  
Tosyl Group ◽  
Coordination Ability

The role of the tosyl group in the coordination ability of N-protected amino acids. 2. Behavior of the copper(II) ion-N-tosylglycinate system in aqueous solution

1983 ◽  
Vol 105 (13) ◽  
pp. 4333-4337 ◽  
Author(s):  
L. Antolini ◽  
L. P. Battaglia ◽  
G. Battistuzzi Gavioli ◽  
A. Bonamartini Corradi ◽  
G. Grandi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Tosyl Group ◽  
Coordination Ability

Experimental and computational structural study of two hindered aminoanthraquinones in crystals and solutions

2000 ◽  
Vol 215 (9) ◽  
Author(s):  
A.V. Yatsenko ◽  
K.A. Paseshnichenko ◽  
S.I. Popov
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Electronic Spectra ◽  
Molecular Structures ◽  
Amino Group ◽  
Single Crystal Diffraction ◽  
Molecular Conformations ◽  
X Ray ◽  
Crystal And Molecular Structures ◽  
Visible Spectra

The crystal and molecular structures of 2-methyl-1-methylamino-anthraquinone (I) and 1-methylphenylamino-anthraquinone (II) were studied by the X-ray single-crystal diffraction and the visible spectra of crystalline specimens and their solutions were recorded. The molecule I is closely planar, whereas in the molecule II the amino group is 58° rotated out of the plane of the anthraquinone skeleton. In both structures the molecules pack in stacks. The comparison of experimental and calculated (on the DFT and AM1 levels) molecular structures, together with the comparison of experimental and INDO/S-calculated electronic spectra, give the evidence that molecular conformations (especially for II) change upon transfer from the solid state to solutions, and the π-delocalisation throughout the whole molecule enhances in the solid state.

Crystal and molecular structures of 4-aryl-1,4-dihydropyrimidines: Novel calcium channel antagonists

2003 ◽  
Vol 218 (1) ◽  
Author(s):  
K. Chandra Mohan ◽  
K. Ravikumar ◽  
M. M. Shetty ◽  
D. Velmurugan
Keyword(s):  
Solid State ◽  
Calcium Channel ◽  
Molecular Structures ◽  
Calcium Channel Antagonists ◽  
Crystal And Molecular Structures ◽  
Solid State Structures

AbstractThe solid-state structures of three calcium channel antagonists viz. 1,4-dihydro-6-methyl-5-N-methyl-carbamoyl-4-(3′,4′-dichlorophenyl)-2(3 H)-pyrimidinethione, C

scholarly journals Solid-state photochemistry of molecular photo-switchable species: the role of photocrystallographic techniques

2013 ◽  
Vol 69 (12) ◽  
pp. 1448-1456 ◽  
Author(s):  
Lauren E. Hatcher ◽  
Paul R. Raithby
Keyword(s):  
Solid State ◽  
Three Dimensional ◽  
Molecular Structures ◽  
Ground State Structure ◽  
Key Factors ◽  
Isomeric Structure ◽  
Linkage Isomers ◽  
Percentage Conversion ◽  
Dimensional Crystal

Over the last 30 years, the single-crystal photocrystallographic technique has been developed to determine the three-dimensional crystal and molecular structures of metastable species which have been generated in the crystal photochemically. Transition-metal complexes that have been investigated using this methodology include complexes that contain nitrosyl, dinitrogen, sulfur dioxide and nitrite ligands, all of which form new linkage isomers in the solid state when photoactivated by light of the appropriate wavelength. Both steric and electronic factors determine the level of the conversion from the ground-state structure to the metastable isomeric structure, and both the `reaction cavity' size and the nature of the intermolecular interactions are shown to be among the key factors that influence the percentage conversion.

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