Journal
CHEMISTRY OF MATERIALS
Volume 28, Issue 19, Pages 7029-7038Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.6b02852
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Funding
- Center for Chiral Science at Hiroshima University (MEXT program for promoting the enhancement of research universities, Japan)
- JSPS Core-to-Core Program, A. Advanced Research Networks
- CNRS, France
- [25220803]
- Grants-in-Aid for Scientific Research [15K13674] Funding Source: KAKEN
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We present a case of a concerted sequence of several characteristic biological reactions such as electron transfer, mixed valency, proton or ion motion, and dehydration-rehydration occurring in a single crystal and its associated phase transformations. It provided a unique opportunity to look for accurate pictures of sequence mimicking biological function using crystallography. Here, we report the observation of a reversible musclelike action associated with proton motion between ammonium and coordinated and uncoordinated water molecules in unison in which the whole X-ray diffraction study (including eight structure determinations as a function of temperature and cycling through two phase transformations) was performed in situ on a single crystal of the chiral molecular magnet [Mn-II(R-pnH)(H2O)][Cr-III(CN)(6)]center dot H2O [R-pn = (R)-1,2-propanediamine]. In addition, the reversible structural change in dimensionality from two- to three-dimensional is observed with an increase in the ferrimagnetic Curie temperature from 38 to 73 K upon dehydration.
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