184898-33-7Relevant academic research and scientific papers
A Face-to-Face Dimer of Au3 Superatoms Supported by Interlocked Tridentate Scaffolds Formed in Au18S2(SR)12
Shigeta, Taro,Takano, Shinjiro,Tsukuda, Tatsuya
supporting information, (2021/12/06)
A new sulfur-containing gold cluster, Au18S2(STipb)12, was serendipitously obtained using the bulky thiol, 2,4,6-triisopropylbenzyl mercaptan (TipbSH), as protecting ligands. Single-crystal X-ray diffraction analysis revealed that Au18S2(STipb)12 has a deformed octahedral Au6 core clutched by two tridentate S[Au2(STipb)2]3 units in an interlocked manner. Based on density functional theory calculations, we propose that the Au6 core with two electrons is better viewed as a face-to-face dimer of Au3(1e) superatoms rather than an electronically closed Au6(2e) superatom. In situ formation of the sulfide anions (S2?) via C-S bond breakage is ascribed to the steric repulsion between the TipbS ligands.
