Water Exchange
The exchange between bulk and coordinated water is of fundamental interest as a measure of the intrinsic kinetic lability of metal ions. This rate is relevant to toxicity, catalysis, magnetic resonance imaging, and other effects. For octahedral mono- and dicationic aquo complexes, these exchange processes occur via an interchange pathway that has more or less dissociative character. Rates vary by a factor of 1018, 3+ being the slowest and + being one of the fastest for octahedral complexes. Charge has a significant influence on these rates but non-electrostatic effects are also important.
Read more about this topic: Dissociative Substitution
Famous quotes containing the words water and/or exchange:
“Before the land rose out of the ocean, and became dry land, chaos reigned; and between high and low water mark, where she is partially disrobed and rising, a sort of chaos reigns still, which only anomalous creatures can inhabit.”
—Henry David Thoreau (1817–1862)
“So long as the system of competition in the production and exchange of the means of life goes on, the degradation of the arts will go on; and if that system is to last for ever, then art is doomed, and will surely die; that is to say, civilization will die.”
—William Morris (1834–1896)