Dielectric anomaly and giant deuteration effect in a H-bond trimeric co-crystal [4, 4'-Bipyridine]2[1,4-dihydroxybenzene]
Source abstract
Abstract
Co-crystal [4,4ʹ-bipyridine]2[1,4-dihydroxybenzene] (1) was prepared by evaporating methanol solution of 4,4ʹ-bipyridine with 1,4-dihydroxybenzene at 4°C. 1 shows a fascinating dielectric anomaly with a maximum at ~210 K, which is independent on ac frequency. However, the absence of thermal anomaly and structural phase transition is related to the dielectric anomaly. The co-crystal [4,4ʹ-bipyridine]2[1,4-dihydroxybenzene-d2] (2) was further obtained via H+/D+ exchange in 1 and the deuteration gives rise to the maximum shifting to 254 K in the dielectric spectrum of 2. The dielectric anomaly corresponds to disorder-to-order transformation of H+/D+ in the O–H/D···N H-bond in 1 and 2.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Solid-state spectroscopy and crystallography · Crystallography and molecular interactions · Axial and Atropisomeric Chirality Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
Department of Applied Chemistry, College of Chemistry & Molecular Engineering, Nanjing Tech University, Nanjing, P. R. China
College of Materials Science and Engineering, Nanjing Tech University, Nanjing, P. R. China
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, P. R. China
Funding
Special Research Found for the Doctoral Program of Higher Education of China · National Nature Science Foundation of China
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