Crystal structure of fully protonated 3,10,20,21,28-tetraoxo-5,8,23,26-tetrakis(carboxymethyl)-2,5,8,11,20,23,26,29-octaaza[12.12]metacyclophane

Julio C. Altamirano-Coronado, Herbert Höpfl, Carolina Godoy-Alcantar, Lorena Machi, Felipe Medrano*

*Corresponding author for this work

Research output: Contribution to journalComment/debate


A protonated cation salt of title compound C36H48N8O12 crystallized in the monoclinic space group with cell parameters a = 11.4721(8)Å, b = 23.1049(16)Å, c = 21.0730(14)Å, β = 99.0040(10)° and Z = 4; the final residual factor was 0.0582 with 9694 reflections. A cyclophane conformation was determinated by an interplay between the ridigidy of amide and phenyl groups and the presence of intramolecular hydrogen bonds and C-H···π interactions. 2006

Original languageEnglish
Pages (from-to)x271-x272
JournalAnalytical Sciences: X-ray Structure Analysis Online
Issue number11
StatePublished - 1 Jan 2006


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