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期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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

Authors:	Melvyn Rowen Churchill Thomas S. Janik K. O. Aileen Chin Janet R. Morrow

Affiliation:	(1) Department of Chemistry, Natural Sciences & Mathematics Complex, North Campus, University at Buffalo, State University of New York, 14260-3000 Buffalo, New York;(2) Department of Chemistry, State University of New York College at Fredonia, 14048 Fredonia, New York

Abstract:	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.

Keywords:	Tetraazacyclotetradecane protonated ligand 14-membered ring octadentate ligand crystal structure hydrogen bonding
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