Chemistry

Zn+ Now in Sites

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Science  30 May 2003:
Vol. 300, Issue 5624, pp. 1345
DOI: 10.1126/science.300.5624.1345b

Zinc is normally oxidized all the way to Zn2+, and previous attempts to create the Zn+ species have produced diamagnetic dimers of monovalent cation. Now Tian et al. have used a molecular sieve, a silicoaluminophosphate that adopts the chabazite structure (SAPO-CHA), to create isolated Zn+ cations. The phosphate groups within the lattice lead to the presence of one to two acidic protons that can react with metallic Zn to liberate hydrogen. These sites are sufficiently isolated, however, to prevent any one Zn atom from liberating a second hydrogen atom and oxidizing further to Zn2+. Electron spin resonance spectra revealed the presence of the paramagnetic Zn+ cations.—PDS

J. Am. Chem. Soc. 10.1021/ja0343757 I (2003).

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