Unique vapochromism of a paddlewheel-type dirhodium complex accompanied by dynamic structural and phase transitions

The one-dimensional coordination polymer [Rh 2 (HA) 4 ] n ( 1G ; HA = hexanoate) exhibits a drastic vapochromic color change from green to red upon exposure to pyridine (py) vapor. Heating the red discrete complex [Rh 2 (HA) 4 (py) 2 ] ( 1R ) at 338 K affords the purple discrete tetrarhodium complex...

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Published inDalton transactions : an international journal of inorganic chemistry Vol. 49; no. 41; pp. 14373 - 14377
Main Authors Kataoka, Yusuke, Kohara, Yoshihiro, Yano, Natsumi, Kawamoto, Tatsuya
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 27.10.2020
Subjects
Color
Coordination polymers
Crystallography
Phase transitions
Rhodium compounds
Temperature dependence
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Summary:The one-dimensional coordination polymer [Rh 2 (HA) 4 ] n ( 1G ; HA = hexanoate) exhibits a drastic vapochromic color change from green to red upon exposure to pyridine (py) vapor. Heating the red discrete complex [Rh 2 (HA) 4 (py) 2 ] ( 1R ) at 338 K affords the purple discrete tetrarhodium complex [Rh 2 (HA) 4 (py)] 2 ( 1P ), which is an intermediate species in the vapochromic transformation of 1G to 1R . The obtained complexes 1G , 1R , and 1P differ not only in their color in the solid state, but also in their temperature-dependent phase transition properties. Paddlewheel-type dirhodium complex exhibits highly selective vapochromic behavior in response to pyridine vapor and undergoes dynamic structural and phase transitions.
Bibliography:For ESI and crystallographic data in CIF or other electronic format see DOI
10.1039/d0dt02672g
Electronic supplementary information (ESI) available: Instruments and methods, synthetic procedure, 13 figures, 3 tables, and CIFs. CCDC
2018470-2018472
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1477-9226
1477-9234
DOI:10.1039/d0dt02672g