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  • Periodic trends in the hydration energies and critical sizes of alkaline earth and transition metal dication water complexes
Title: Periodic trends in the hydration energies and critical sizes of alkaline earth and transition metal dication water complexes
Abstract This review encompasses guided ion beam tandem mass spectrometry studies of hydrated metal dication complexes. Metals include the Group 2 alkaline earths (Mg, Ca, Sr, and Ba), late first‐row transition metals (Mn, Fe, Co, Ni, Cu, and Zn), along with Cd. In all cases, threshold collision‐induced dissociation experiments are used to quantitatively determine the sequential hydration energies for M 2+ (H 2 O) x complexes ranging in size from one to 11 water molecules. Periodic trends in these bond dissociation energies are examined and discussed. Values are compared to other experimental results when available. In addition to dissociation by simple water ligand loss, complexes at a select size (which differs from metal to metal) are also observed to undergo charge separation to yield a hydrated metal hydroxide cation and a hydrated proton. This leads to the concept of a critical size, x crit , and the periodic trends in this value are also discussed.  more » « less
Award ID(s):
1954142
NSF-PAR ID:
10459140
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Mass Spectrometry Reviews
ISSN:
0277-7037
Page Range / eLocation ID:
e21830
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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