Group 11 thin films are desirable as interconnects in microelectronics. {Although|Even though|Though|Despite the fact that|While} {many|numerous|several|a lot of|quite a few|lots of} M–N bonded Cu precursors {have been|happen to be|have already been} explored for vapor deposition, {there is|there’s|there is certainly} {currently|presently|at present|at the moment} a lack of {suitable|appropriate} Ag and Au derivatives. Herein, we present monovalent Cu, Ag and Au 1,3-di-tert-butyltriazenides {that have|which have} {potential|possible|prospective} for use in vapor deposition. These compounds possess thermal stability and volatility that rival that of {current|present|existing} state-of-the-art group 11 precursors with bidentate M–N bonded ligands. All compound sublime quantitatively {between|in between|among|amongst|involving} 120 and 130 °C at 0.{5|five} mbar. Thermogravimetric {analysis|evaluation} showed the Cu and Ag compounds {both|each} volatilized at ~200 °C with 0 and 2% residual mass, respectively. The Au triazenide showed two separated mass loss events at ~175 and 240 °C, and 35% residual mass. The crystal structure {of the|from the|in the|on the|with the|of your} Cu compound showed a dimer, {whilst|while} the Ag and Au derivatives {were|had been|have been} tetrameric. Nuclear magnetic resonance spectroscopy showed dimers for the Cu and Au compounds {and a|along with a|as well as a|plus a|and also a|in addition to a} dimer/tetramer equilibrium for the Ag compound. Electronic energies from density functional theory calculations confirmed dimeric preference for the Cu triazenide {while|whilst|although|even though|when|though} Ag and Au preferred the tetrameric. {However|Nevertheless|Nonetheless|Even so|On the other hand|Having said that}, all {three|3} compounds showed dimeric preference when accounting for entropy. Dimers are, {therefore|consequently|as a result|for that reason|thus|hence}, {expected|anticipated} to dominate {in the|within the|inside the} gas phase for all {three|3} compounds {during|throughout|in the course of|for the duration of|through} sublimation. {Natural|All-natural|Organic} bond orbital {analysis|evaluation} was {used|utilized|employed|utilised|applied|made use of} to {identify|determine|recognize} orbital interactions {important|essential|crucial|critical|significant|vital} for the dimer/tetramer preference. {Three|3} {factors|elements|aspects|variables|components|things} {were|had been|have been} identified, in conjunction with {strong|powerful|robust|sturdy} metal-metal interactions, to {increase|improve|boost|enhance|raise} the preference for rhombic tetramers. 6-Chloro-7-deazapurine-β-D-riboside site 2′,3′-Dideoxy-5-iodouridine Chemscene PMID:23439434
Headquartered in New Jersey, USA, ChemScence is a global leading manufacturer and supplier of building blocks and fine research chemicals. We now have branches in Sweden and India. Our mission is to pave the way for drug discovery by providing the most innovative chemicals with the highest-level quality for a reasonable price.
Our Catalog Products
We deliver an extensive portfolio of products, including Building Blocks,Catalysts&Ligands,Synthetic Reagents,Material Science and ADC Linkers&Protac,.ChemScene now have over 600000 Building Blocks & Intermediates in our catalog and more than 70000 of them are in stock.
For details, please refer to the ChemScene website:https://www.chemscene.com