Selective Retention of Methanol over Ethanol by a Cyclen-Based Cryptand/Copper(II) Complex
journal contribution
posted on 2013-10-21, 00:00 authored by Yoichi Habata, Mari Ikeda, Ajay K. Sah, Kanae Noto, Shunsuke KuwaharaA cyclen-based
cryptand (2) was prepared in a two-step synthesis from
dioxocyclen. When a Cu(CF3SO3)2 complex
with 2 was prepared in methanol, the 2/Cu(CF3SO3)2 complex incorporated one methanol
in the cavity formed by the diethyleneoxy unit and the NH group of
the cyclen. When prepared in ethanol, the 2/Cu(CF3SO3)2 complex similarly incorporated
one ethanol. Cold electrospray ionization mass spectrometry (CSI-MS)
of the 2/Cu(CF3SO3)2/alcohol complexes selectively retains methanol over ethanol under
CSI-MS conditions.
