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Probing the Metal Composition of Ternary 12–12′‐16 Nanoclusters via Electrospray Ionization Mass Spectrometry
Author(s) -
Howarth Ashlee,
Liu JiangJiang,
Konermann Lars,
Corrigan John F.
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100075
Subject(s) - nanoclusters , chemistry , electrospray ionization , mass spectrometry , ternary operation , cluster (spacecraft) , cadmium , metal , analytical chemistry (journal) , zinc , mass spectrum , crystallography , ligand (biochemistry) , composition (language) , chromatography , organic chemistry , biochemistry , receptor , computer science , programming language , linguistics , philosophy
The reaction of [(3,5‐Me 2 –C 5 H 3 N) 2 Zn(SeSiMe 3 ) 2 ] with a solution of Cd(OAc) 2 , Se(Ph)SiMe 3 and PPr 3 at low temperature was used to prepare single crystals of ternary group 12–12′‐16 nanoclusters with the composition [Zn 1.8 Cd 8.2 Se 4 (SePh) 12 (PPr 3 ) 4 ]. A ligand exchange reaction using Na[SePh] was performed to displace the neutral PPr 3 ligands. The resulting clusters were probed using electrospray ionization mass spectrometry to determine the number of zinc and cadmium atoms in the cluster and compared to the all cadmium cluster [Cd 10 Se 4 (SePh) 12 (PPr 3 ) 4 ]. The dianionic clusters [Zn x Cd 10– x Se 4 (SePh) 14 ] 2– where x = 0, 1, 2 were assigned in the mass spectra, revealing that the clusters exhibit elemental distributions that are quite narrow in these experiments.