Insights into the absorption of carbon dioxide by zinc substrates: isolation and reactivity of di- and tetranuclear zinc complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Matilde FondoManuel R Bermejo

Abstract

The heptadentate Schiff base H(3)L can react with zinc acetate to form the discrete dinuclear complex Zn(2)L(OAc)(H(2)O), 1.H(2)O. The reaction of 1.H(2)O with NMe(4)OH.5H(2)O both in air and under an argon stream has been investigated. On one hand, this reaction in air yields the tetranuclear complex (Zn(2)L)(2)(CO(3))(H(2)O)(6), 2.5H(2)O, by spontaneous absorption of adventitious carbon dioxide. This process can be reverted in an acetic acid medium, whereas the treatment of 2.5H(2)O with methanoic acid yields crystals of [Zn(2)L(HCOO)].0.5MeCN.1.25MeOH.2H(2)O, 3.0.5MeCN.1.25MeOH.2H(2)O. On the other hand, the interaction under an argon atmosphere of 1.H(2)O with NMe(4)OH.5H(2)O in methanol allows the isolation of the dinuclear complex Zn(2)L(OMe)(H(2)O)(4), 4.4H(2)O. Recrystallisations of 1.H(2)O, 2.5H(2)O and 4.4H(2)O, in different solvents, yielded single crystals of 1.MeCN.2.5H(2)O, 2.4MeOH and 4.3MeOH.H(2)O, respectively. The crystal structure of 2.4MeOH can be understood as resulting from an unusual asymmetric tetranuclear self-assembly from two dinuclear units, and shows three different geometries around the four zinc atoms.

Citations

Jun 10, 2010·Chemical Communications : Chem Comm·María J RomeroManuel R Bermejo
Aug 27, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Yangyang SunJincai Wu
Jun 18, 2005·Angewandte Chemie·Ling-Yan KongNorikazu Ueyama
Oct 16, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Matilde FondoJesús Sanmartín
Feb 14, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·Matilde FondoJesús Sanmartín
Mar 22, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·James R PankhurstJason B Love
Aug 4, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·María J RomeroManuel R Bermejo
Dec 5, 2008·Inorganic Chemistry·Paul D KnightCharlotte K Williams
Apr 17, 2009·Inorganic Chemistry·Matilde FondoJesús Sanmartín

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