title: Au108S24(PPh3)16: A Highly Symmetric Nanoscale Gold Cluster Confirms the General Concept of Metalloid Clusters.
abstract: The reduction of (Ph3P)AuCl with NaBH4in the presence of HSC(SiMe3)3, leads to one of the largest metalloid gold clusters: Au108S24(PPh3)16(1). Within 1 an octahedral Au44core of gold atoms arranged as in Au metal is surrounded by 48 oxidized Au atoms of an Au48S24shell, a novel building block in gold chemistry. The protecting Au48S24shell is completed by additional 16 Au(PPh3) units, leading to a complete protection of the gold core. Within 1 the Au-Au distances get more molecular on going from the center to the ligand shell. Cluster 1 represents novel structural motives in the field of metalloid gold clusters which also are partly typical for metal atoms in metalloid clusters: MnRm(n>m).
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Kenzler
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Claudio
authors.initials: C
authors.lastname: Schrenk
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Schnepf
keywords: gold; metalloid clusters; nanoparticles; thiol