Solution and Solid-State Conformational and Structural Analysis of theN-Methyl Derivatives of (±)-threo-Methylphenidate, (±)-erythro-Methylphenidate, and (±)-threo-p-Methyl-methylphenidate Hydrochloride Salts

1998 ◽  
Vol 63 (6) ◽  
pp. 1785-1794 ◽  
Author(s):  
Robert Glaser ◽  
Itay Adin ◽  
Dror Shiftan ◽  
Qing Shi ◽  
Howard M. Deutsch ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
Methyl Derivatives ◽  
Derivatives Of

scholarly journals The fumarate salts of the N-isopropyl-N-methyl derivatives of DMT and psilocin

2019 ◽  
Vol 75 (9) ◽  
pp. 1316-1320 ◽  
Author(s):  
Andrew R. Chadeayne ◽  
Duyen N. K. Pham ◽  
James A. Golen ◽  
David R. Manke
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Side Chain ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Ethyl Methyl ◽  
Methyl Derivatives ◽  
Solid State Structures ◽  
Derivatives Of

The solid-state structures of the salts of two substituted tryptamines, namely N-isopropyl-N-methyltryptaminium (MiPT) fumarate {systematic name: [2-(1H-indol-3-yl)ethyl](methyl)propan-2-ylazanium 3-carboxyprop-2-enoate}, C14H21N2 +·C4H3O4 −, and 4-hydroxy-N-isopropyl-N-methyltryptaminium (4-HO-MiPT) fumarate monohydrate {systematic name: [2-(4-hydroxy-1H-indol-3-yl)ethyl](methyl)propan-2-ylazanium 3-carboxyprop-2-enoate monohydrate}, C14H21N2O+·C4H3O4 −·H2O, are reported. Both salts possess a protonated tryptammonium cation and a 3-carboxyacrylate (hydrogen fumarate) anion in the asymmetric unit; the 4-HO-MiPT structure also contains a water molecule of crystallization. Both cations feature disorder of the side chain over two orientations, in a 0.630 (3):0.370 (3) ratio for MiPT and a 0.775 (5):0.225 (5) ratio for 4-HO-MiPT. In both extended structures, N—H...O and O—H...O hydrogen bonds generate infinite two-dimensional networks.

scholarly journals The synthesis and thermal decomposition of bis(phenylthio)methyl derivatives of mercury

1977 ◽  
Vol 55 (13) ◽  
pp. 2554-2558 ◽  
Author(s):  
Tristram Chivers ◽  
Ritchwick Ram
Keyword(s):  
Thermal Decomposition ◽  
Solid State ◽  
Minor Role ◽  
Homolytic Fission ◽  
Methyl Derivatives ◽  
A Minor ◽  
Derivatives Of

The mercurials, [(PhS)2CH]2Hg and PhHgCH(SPh)2, have been prepared from (PhS)2CHLi and HgBr2 or PhHgCl, respectively. The unsymmetrical compound decomposes readily both in the solid state and in various solvents. The symmetrical compound is more stable but also undergoes decomposition in certain refluxing solvents. The identity of the products suggests that the major decomposition route involves homolytic fission of the Hg—CH(SPh)2 bond and that PhS migration to mercury plays only a minor role.

Physical Properties of TCNQ Salts with N-Methyl Derivatives of Pyridine

1982 ◽  
Vol 85 (1) ◽  
pp. 257-263 ◽  
Author(s):  
A. Graja ◽  
M. Przybylski ◽  
B. Butka ◽  
R. Swietlik
Keyword(s):  
Physical Properties ◽  
Methyl Derivatives ◽  
Derivatives Of

Structural Analysis of Slag and Cement Materials by Solid-state NMR

2018 ◽  
Vol 56 (5) ◽  
pp. 454-459
Author(s):  
T. Takahashi ◽  
T. Ohkubo ◽  
K. Kanehashi
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
Solid State Nmr

Methyl derivatives of furan

1974 ◽  
Vol 39 (11) ◽  
pp. 3109-3116 ◽  
Author(s):  
J. Šrogl ◽  
M. Janda ◽  
I. Stibor ◽  
V. Skála ◽  
P. Trška ◽  
...  
Keyword(s):  
Methyl Derivatives ◽  
Derivatives Of

scholarly journals Functionalised Terpyridines and Their Metal Complexes—Solid-State Interactions

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 199-227
Author(s):  
Young Hoon Lee ◽  
Jee Young Kim ◽  
Sotaro Kusumoto ◽  
Hitomi Ohmagari ◽  
Miki Hasegawa ◽  
...  
Keyword(s):  
Solid State ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Weak Interactions ◽  
Dispersion Interactions ◽  
Derivatives Of

Analysis of the weak interactions within the crystal structures of 33 complexes of various 4′-aromatic derivatives of 2,2′:6′,2″-terpyridine (tpy) shows that interactions that exceed dispersion are dominated, as expected, by cation⋯anion contacts but are associated with both ligand–ligand and ligand–solvent contacts, sometimes multicentred, in generally complicated arrays, probably largely determined by dispersion interactions between stacked aromatic units. With V(V) as the coordinating cation, there is evidence that the polarisation of the ligand results in an interaction exceeding dispersion at a carbon bound to nitrogen with oxygen or fluorine, an interaction unseen in the structures of M(II) (M = Fe, Co, Ni, Cu, Zn, Ru and Cd) complexes, except when 1,2,3-trimethoxyphenyl substituents are present in the 4′-tpy.

O'-Methyl derivatives of arabinosylcytosine

1972 ◽  
Vol 46 (4) ◽  
pp. 1734-1741 ◽  
Author(s):  
E. Darżynkiewicz ◽  
J.T. Kuśmierek ◽  
D. Shugar
Keyword(s):  
Methyl Derivatives ◽  
Derivatives Of
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