Journal
MOLECULAR PHYSICS
Volume 115, Issue 13, Pages 1544-1554Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2017.1303206
Keywords
Covalence; electron density property; ELF; AIM; NRT
Funding
- Natural Science Foundation of China [U1404210]
- Innovative Research Team (in Science and Technology) in University of Henan province [13IRTSTHN017]
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Systematic theoretical investigations have been performed to understand the periodicity, structures and interactions of the coinage-metal halide series, M3X3(M = Cu, Ag and Au, X = F - I) at MP2 theoretical level with extended basis sets. Mechanisms of M-X and M-M interactions were investigated by natural bond orbital analyses, natural resonance theory, electron localisation function, electron density deformation, atoms in molecules and visualised by reduced density gradient analyses. Periodic trends are found in the bond length, stability and covalent nature of the M-X and M-M interactions. As expected, increased covalence when halogens become heavier and Au-Au and Au-X interactions contain enhanced covalence in comparison with lighter congeners Cu3X3 and Ag3X3.
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