Melissa K. Thorstad, Gabriel Hall, Dr. Russ Baughman, and Dr. James McCormick. Truman State University, Kirksville, MO
As part of a continuing study of Pb2+ coordination chemistry with TPA, tris-(2-pyridylmethyl) amine, two new compounds have been synthesized. Compound (I), μ-Cl3[Pb(TPA)]2Clx(OH)y ∙ zH2O, is a dimer with three bridging chlorides and exhibits mirror symmetry. It is likely that (I) is a non-stoichiometric salt containing varying amounts of Cl- and OH-, as judged by the partial occupancy of the Cl- not bound to the lead. Compound (II), [Pb(TPA)]2PbCl6 ∙, contains a square pyramidal “PbCl5” structural unit where the Pb2+ sits nearly in the basal plane of the square pyramid. This is unexpected on the basis of VSEPR Theory, which predicts that the Pb2+ lone pair should manifest itself by a distortion of the structure leading to the Pb2+ sitting below the basal plane of the square pyramid.
Back to Inorganic Chemistry General Papers
Back to The 41st Midwest Regional Meeting (October 25-27 2006)