Abstract
We introduce relativistic density functional theory (DFT) calculations on the gold cluster complexes (cluster-molecule-cluster) Au4-S-CnH2n-S′-Au4′ (n = 2–5). The structural, electronic and relativistic (ZORA) Bader's quantum theory of atoms in molecules (QTAIM) properties of the two lowest-energy complex isomers were computed as a function of the alkanedithiol size (n). The lowest-energy isomer is a triplet spin state independently of the complex size. According to QTAIM, the Au-Au and S-Au bonds are classified as closed shell (non-covalent) type. The HOMO-LUMO gap of the cluster complexes shows a zigzag behavior typical of gold nanoclusters with respect to the size of the alkanedithiol chain (n).
Original language | English |
---|---|
Pages (from-to) | 287-294 |
Number of pages | 8 |
Journal | Chemical Physics Letters |
Volume | 660 |
DOIs | |
State | Published - 2016 |
Keywords
- Alkanedithiols
- DFT
- Gold nanoclusters
- Molecular electronics
- Molecular nanowires
- QTAIM