The present work deals with a challenge in the synthesis of aryltrifluoromethyliodanes (ArICFX) and develops a direct route to PhICFCl via a simple ligand-exchange reaction of PhI(OCOCF), MeSiCF, and NaCl for the first time. The I-Cl bond length in PhICFCl supports its iodonium character, which enables an enhanced CF-transfer capability in electrophilic S-, O-, N-, and C-trifluoromethylations as well as in catalyst-free trifluoromethylation-cyclizations of arylisonitriles.
This study was aimed to explore the high-temperature oxidation behaviour of AlTiSiN and AlCrSiN coatings. The coatings were deposited using arc ion plating and annealed in air at a temperature range of 600-1000°C for 2 h. The results showed that the oxidation of AlTiSiN coatings started at 900°C and failed at 1000°C. However, the oxidation of AlCrSiN was different from AlTiSiN coatings, which commenced at 800°C and kept stable till 1000°C. The hardness of the as-deposited AlTiSiN coatings dropped from 25.2 to 16.5 GPa after 1000°C annealing, while AlCrSiN coatings decreased from 24.2 to 20.5 GPa. The AlCrSiN coating exhibits a better high-temperature oxidation resistance than AlTiSiN coating.
Purpose
Digital libraries and social media have emerged as two prominent online information sources with different characteristics. The purpose of this paper is to compare digital libraries and social media from the perspective of the dual route model which outlined a general framework of central and peripheral route-induced attitude change.
Design/methodology/approach
Research hypotheses were developed and data collected from users of digital libraries and social media were used for data analysis. The paired samples t-test was employed to compare the means.
Findings
Both central route (information quality) and peripheral route (source credibility and reputation) of digital libraries are higher than those of social media.
Practical implications
The important status of digital libraries as conventional information sources should be propagated by various “marketing” ways. Managers of digital libraries should encourage their users to use both digital libraries and social media so that some unique advantage of social media could usefully complement digital libraries. They should also recognize the challenge brought by social media and try various ways to enhance reputation.
Originality/value
Building on the dual route model, this study compares digital libraries and social media in terms of the central route and peripheral route, which the authors believe presents a new lens for digital library research and practice alike.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.