Crystal and molecular structure of the triflate salt of diprotonated 1,4,8,11-tetrakis(2-hydroxyethyl)-1,4,8,11-tetraazacyclotetradecane, [C10H22N4(CH2CH2OH)4 2+]−[CF3SO3 −]2: geometry of a diprotonated octadenate ligand

Autor:	Thomas S. Janik, K. O. Aileen Chin, Melvyn Rowen Churchill, Janet R. Morrow
Rok vydání:	1997
Předmět:	biology Chemistry Ligand Hydrogen bond General Chemistry Crystal structure Condensed Matter Physics Crystallography biology.protein Molecule Macrocyclic ligand Trifluoromethanesulfonate Organic anion Monoclinic crystal system
Zdroj:	Journal of Chemical Crystallography. 27:319-324
ISSN:	1572-8854 1074-1542
DOI:	10.1007/bf02575980
Popis:	The title complex crystallizes in the centrosymmetric monoclinic space group P21/n with Z=2. The cation is the diprotonated derivative of the neutral octadentate macrocyclic ligand C10H20N4(CH2CH2OH)4; the two protonated nitrogen atoms are as far apart as is possible in the 14-membered ring (1-and 8-positions) so as to minimize electrostatic repulsions. Each of the [C10H22N4(CH2CH2OH)4 2+] cations is involved in hydrogen bonding (through the four hydroxy groups) to oxygen atoms on four different peripheral [CF3SO3 −] anions.
Databáze:	OpenAIRE
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