A single crystal study of CPO-27 and UTSA-74 for nitric oxide storage and release†
Susan E.
Henkelis, 
a
Simon M.
Vornholt,
a
David B.
Cordes,
a
Alexandra M. Z.
Slawin,
a
Paul S.
Wheatley
a
and
Russell E.
Morris
*ab
a
Simon M.
Vornholt,
a
David B.
Cordes,
a
Alexandra M. Z.
Slawin,
a
Paul S.
Wheatley
a
and
Russell E.
Morris
*ab
Abstract
Single crystal CPO-27-Mg, -Zn and its structural isomer UTSA-74 have been prepared through use of acid modulators; salicylic acid and benzoic acid, respectively. Salicylic acid directed the synthesis of CPO-27-Mg/Zn whereas benzoic acid the synthesis of UTSA-74. Through “in-house” SCXRD, DMF was seen to bind to the Zn2+ and water to the Mg2+ metal sites in CPO-27-M. Although the synthesis conditions were analogous for UTSA-74, DMF is too large to bind due to the proximity of the binding sites. A dissolution–recrystallisation transformation was examined from UTSA-74 to CPO-27-Zn. The release of nitric oxide was measured for each material.
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