Search results for "Gold"
showing 10 items of 1320 documents
The Geometry of a Domed Architecture: A Stately Example of Kārbandi at Bagh-e Dolat Abad in Yazd
2016
This paper analyses the kārbandi of the Hashti pavilion at Bagh-e-Dolat Abad in Yazd. Kārbandi is a spatial system obtained through the projection of a star-shaped drawing onto a curved surface. It is characterised by a complex use of geometry and repetitive symmetry. The analysis of its geometrical aspects contributes to an understanding of the traditional rules underlying the original design. The kārbandi of the octagonal vestibule of the Hashti pavilion consists of a complex roof system that completes the octagonal volume of the room below; its intrados presents a pattern of interlocking ribbed arches. The paper also looks at the drawings, module and proportions of the Hashti pavilion, w…
Dynamic Stabilization of the Ligand-Metal Interface in Atomically Precise Gold Nanoclusters Au68 and Au144 Protected by meta-Mercaptobenzoic Acid
2017
Ligand-stabilized, atomically precise gold nanoclusters with a metal core of a uniform size of just 1–3 nm constitute an interesting class of nanomaterials with versatile possibilities for applications due to their size-dependent properties and modifiable ligand layers. The key to extending the usability of the clusters in applications is to understand the chemical bonding in the ligand layer as a function of cluster size and ligand structure. Previously, it has been shown that monodispersed gold nanoclusters, stabilized by meta-mercaptobenzoic acid (m-MBA or 3-MBA) ligands and with sizes of 68–144 gold atoms, show ambient stability. Here we show that a combination of nuclear magnetic reson…
Selective Acrolein Hydrogenation over Ligand-Protected Gold Clusters : A Venus Flytrap Mechanism
2022
The catalytic partial hydrogenation of α,β-unsaturated aldehydes is an ideal reaction to understand the selectivity between two different functional groups Here the two functional groups are C═C and C═O, and the hydrogenation of C═O is preferentially desired due to the importance of the issuing products, unsaturated alcohols, in fine-chemical industries. Using density functional theory calculations, we investigate the catalytic competency toward this reaction of a Au nanocluster in the presence of protecting ligands that offer higher stability and the possibility for the uniform distribution of size-selected clusters in the catalytic system. meta-Mercaptobenzoic-acid-protected-protected Au …
CCDC 2010362: Experimental Crystal Structure Determination
2020
Related Article: Lucía Piñeiro-López, Francisco-Javier Valverde-Muñoz, Elzbieta Trzop, M. Carmen Muñoz, Maksym Seredyuk, Javier Castells-Gil, Iván da Silva, Carlos Martí-Gastaldo, Eric Collet, José Antonio Real|2021|Chemical Science|12|1317|doi:10.1039/D0SC04420B
CCDC 1457101: Experimental Crystal Structure Determination
2016
Related Article: Javier López-Cabrelles, Guillermo Mínguez Espallargas and Eugenio Coronado|2016|Polymers|8|171|doi:10.3390/polym8050171
CCDC 243014: Experimental Crystal Structure Determination
2005
Related Article: A.Galet, M.C.Munoz, V.Martinez, J.A.Real|2004|Chem.Commun.||2268|doi:10.1039/b409974e
CCDC 1519225: Experimental Crystal Structure Determination
2017
Related Article: Sabrina Antonello, Tiziano Dainese, Fangfang Pan, Kari Rissanen, Flavio Maran|2017|J.Am.Chem.Soc.|139|4168|doi:10.1021/jacs.7b00568
CCDC 998586: Experimental Crystal Structure Determination
2014
Related Article: Marco De Nardi, Sabrina Antonello, De-en Jiang, Fangfang Pan, Kari Rissanen, Marco Ruzzi, Alfonso Venzo, Alfonso Zoleo, Flavio Maran|2014|ACS Nano|8|8505|doi:10.1021/nn5031143
CCDC 1852560: Experimental Crystal Structure Determination
2018
Related Article: Francisco Javier Valverde-Muñoz, M. Carmen Muñoz, Sacramento Ferrer, Carlos Bartual-Murgui, José A. Real|2018|Inorg.Chem.|57|12195|doi:10.1021/acs.inorgchem.8b01842
CCDC 1852559: Experimental Crystal Structure Determination
2018
Related Article: Francisco Javier Valverde-Muñoz, M. Carmen Muñoz, Sacramento Ferrer, Carlos Bartual-Murgui, José A. Real|2018|Inorg.Chem.|57|12195|doi:10.1021/acs.inorgchem.8b01842