Hmm, this really is surprising. I would have thought that at least pt was as effective as pd. Perhpas it has to do with the size of the atom, pt being much larger than pd and perhaps being able to occupy less spaces than pd, but to tell you the truth I am stumped. Perhpas Howard or DJ and shed some light.
Hmm, I dunno. Although the difference is small enough to make me wonder about just statistical error i.e., both of them have about the same level of replacement but there is some error associated with any particular test (time in solution, minor random fluctuations asociated with agitation patterns, phases of the moon and such). Cheers, DJ
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