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Abstract The starting point for this work was a set of crystal structures containing the motif of interaction between methyl groups in homodimers. Two structures were selected for which QTAIM, NCI and NBO analyses suggested an attractive interaction. However, the calculated interaction energy was negative for only one of these systems. The ability of methyl groups to interact with one another is then examined by DFT calculations. A series of (CH3PnHCH3)2homodimers were allowed to interact with each other for a range of Pn atoms N, P, As, and Sb. Interaction energies of these C⋅⋅⋅C tetrel‐bonded species were below 1 kcal/mol, but could be raised to nearly 3 kcal/mol if the C atom was changed to a heavier tetrel. A strengthening of the C⋅⋅⋅C intermethyl bonds can also be achieved by introducing an asymmetry via an electron‐withdrawing substituent on one unit and a donor on the other. The attractions between the methyl and related groups occur in spite of a coulombic repulsion between σ‐holes on the two groups. NBO, AIM, and NCI tools must be interpreted with caution as they can falsely suggest bonding when the potentials are repulsive.
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Selective deoxygenation of polar polymers using metal supported on TiO 2 nanotubes
A catalytic strategy is presented for the selective conversion of OH groups in polyols, such as EVOH, while preserving the carbon backbone with applications for the recycling and compatibilization of multilayered polymer films.
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- Award ID(s):
- 2029394
- PAR ID:
- 10561864
- Publisher / Repository:
- Royal Society of Chemistry
- Date Published:
- Journal Name:
- Catalysis Science & Technology
- Volume:
- 14
- Issue:
- 16
- ISSN:
- 2044-4753
- Page Range / eLocation ID:
- 4622 to 4630
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1039/D4CY00404C
