Journal article
ESI/MS investigation of routes to the formation of silver hydride nanocluster dications [AgxHx−2Ly]2 and gas-phase unimolecular chemistry of [Ag10H8L6]2
M Krstić, A Zavras, GN Khairallah, P Dugourd, V Bonačić-Koutecký, RAJ O'Hair
International Journal of Mass Spectrometry | ELSEVIER SCIENCE BV | Published : 2017
Abstract
When the bis(diphenylphosphino)methane (dppm) ligated silver hydride nanocluster salt [Ag3(L)3(μ3-H)](BF4)2 is allowed to react with NaBH4 in a methanol/chloroform solution for 5 mins., and then diluted with acetonitrile and subjected to electrospray ionization mass spectrometry (ESI/MS), a range of silver hydride nanocluster dications are observed including: [Ag8H6L5]2+ and [AgxHx−2L6]2+, where x = 9–15 and L = dppm. All of these clusters are no longer present in the ESI mass spectrum at 40 mins after mixing. Multistage mass spectrometry (MSn) experiments were carried out to determine the fragmentation chemistry of [Ag10H8L6]2+ under conditions of collision-induced dissociation (CID). The i..
View full abstractGrants
Awarded by European Research Council
Funding Acknowledgements
We thank the Australian Research Council for financial support (DP150101388). AZ acknowledges the award of an Australian Postgraduate PhD Scholarship. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013 Grant agreement No. 320659). VBK and MK acknowledge Prof. Miroslav Radman at MedILS and Split-Dalmatia County for kind support. We thank Prof. David Pullman for discussions of his work on the evolution of hydrogen gas during the preparation of silver nanoparticles.