Journal
CHEMICAL SCIENCE
Volume 3, Issue 6, Pages 2015-2019Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sc20167d
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Funding
- National Science Foundation [CHE-1058987]
- United Technologies Research Center (UTHECHC)/U.S. Department of Energy's Office of APRA-E [1162214, DE-AR0000023]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1058987] Funding Source: National Science Foundation
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The tris(3-t-butyl-5-methylpyrazolyl) hydroborato and tris(2-pyridylthio) methyl derivatives, [Tp(But,Me)]ZnOCO2H and [kappa(4)-Tptm]ZnOCO2H, are the first pair of terminal zinc bicarbonate complexes to be structurally characterized by using X-ray diffraction. In both cases, the bicarbonate ligand coordinates in a unidentate manner, comparable to that in human carbonic anhydrase I. While the bicarbonate complex [kappa(4)-Tptm]ZnOCO2H is obtained by treatment of {[kappa(3)-Tptm]Zn(mu-OH)}(2) with CO2 in the presence of water, the bridging carbonate complex [Tptm]Zn(mu-CO3)Zn[Tptm] is obtained in the absence of water. The reactivity of {[k(3)-Tptm]Zn(mu-OH)}(2) towards CO2 is sufficiently high that the carbonate complex is obtained upon exposure to air.
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