Au24(SAdm)16 Nanomolecules: X-ray Crystal Structure, Theoretical Analysis, Adaptability of Adamantane Ligands to Form Au23(SAdm)16 and Au25(SAdm)16, and Its Relation to Au25(SR)18

Autor:	Amala Dass, Mauro Stener, Luca Sementa, David Crasto, Alessandro Fortunelli, Giovanni Barcaro
Rok vydání:	2014
Předmět:	chemistry.chemical_compound Crystallography Colloid and Surface Chemistry chemistry Adamantane X-ray General Chemistry Crystal structure Biochemistry Catalysis Characterization (materials science) Phase diagram Electronic properties
Zdroj:	Journal of the American Chemical Society. 136:14933-14940
ISSN:	1520-5126 0002-7863
Popis:	Here we present the crystal structure, experimental and theoretical characterization of a Au24(SAdm)16 nanomolecule. The composition was verified by X-ray crystallography and mass spectrometry, and its optical and electronic properties were investigated via experiments and first-principles calculations. Most importantly, the focus of this work is to demonstrate how the use of bulky thiolate ligands, such as adamantanethiol, versus the commonly studied phenylethanethiolate ligands leads to a great structural flexibility, where the metal core changes its shape from five-fold to crystalline-like motifs and can adapt to the formation of Au24±1(SAdm)16, namely, Au23(SAdm)16, Au24(SAdm)16, and Au25(SAdm)16. The basis for the construction of a thermodynamic phase diagram of Au nanomolecules in terms of ligands and solvent features is also outlined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a891791e40c65b974b362ff4de692ea8 https://doi.org/10.1021/ja507738e Zobrazit plný text záznamu