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Synthetic Molecular Gear Based on Double-Decker Porphyrin Complexes.
- Source :
-
Journal of Inorganic & Organometallic Polymers & Materials . Jan2013, Vol. 23 Issue 1, p193-199. 7p. - Publication Year :
- 2013
-
Abstract
- New rotary molecular machines ( 1 and 2) were synthetically constructed from two distinct porphyrin-based rotors, a cerium(IV) bis(porphyrinate)s double-decker (CeDD) and a porphyrinatorhodium(III)-based rotor. These rotors are adjacently mounted on rotational axes aligned to near vertical as resembling the bevel-gear-shaped structure. Structural study using NMR analysis reveals that these distinct rotors are connected through a coordination bond between rhodium(III) and a pyridyl group. At temperature from 193 to 393 K, each rotor represents rotational motion driven by heat fluctuation without decomposition into the corresponding precursors in dichloromethane- d and tetrachloroethane- d. Importantly, the mechanical interaction between the teeth of these rotors is strongly dependent on the central metal atom in a DD rotor and the teeth structure in a porphyrinatorhodium(III)-based rotor. Understanding such relationship between the chemical structures and mechanical interaction is of importance for generating cooperative motion in the hybrid machinery system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15741443
- Volume :
- 23
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Inorganic & Organometallic Polymers & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 84579606
- Full Text :
- https://doi.org/10.1007/s10904-012-9749-x