A giant hybrid organic–inorganic octahedron from a narrow rim carboxylate calixarene

Fernando Machado dos Santos; Meiry Edivirges Alvarenga; Ana Karoline Silva Mendanha Valdo; Renato Rabelo; Danielle Cangussu de Castro Gomes; Ângelo de Fátima; Thiago Vinicius Costa Lara; Cleiton Moreira da Silva; Thiago Teixeira Tasso; João Honorato Araujo Neto; Alzir Azevedo Batista; Alejandro Pedro Ayala; Javier Alcides Ellena; Vinicius Ferraz Guimarães; Cecília Maria Alves Oliveira; Lidya Cardozo da Silva; Boniek Gontijo Vaz; Felipe Terra Martins

doi:10.1039/D0CC07043B

A giant hybrid organic–inorganic octahedron from a narrow rim carboxylate calixarene†

Fernando Machado dos Santos,^a Meiry Edivirges Alvarenga,^a Ana Karoline Silva Mendanha Valdo,^a Renato Rabelo,^b Danielle Cangussu de Castro Gomes,

^a Ângelo de Fátima,^c Thiago Vinicius Costa Lara,^c Cleiton Moreira da Silva,^c Thiago Teixeira Tasso,^c João Honorato Araujo Neto,

^d Alzir Azevedo Batista,

^d Alejandro Pedro Ayala,

^e Javier Alcides Ellena,

^f Vinicius Ferraz Guimarães,^a Cecília Maria Alves Oliveira,^a Lidya Cardozo da Silva,^a Boniek Gontijo Vaz

^a and Felipe Terra Martins

*^a

Author affiliations

* Corresponding authors

^a Institute of Chemistry, Federal University of Goias, CP 131, Goiania, GO, Brazil
E-mail: felipe@ufg.br

^b Institute of Molecular Science (ICMol), University of Valencia, Paterna 46980, Valencia, Spain

^c Department of Chemistry, Federal University of Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil

^d Department of Chemistry, Federal University of Sao Carlos, 13565-905, Sao Carlos, SP, Brazil

^e Department of Physics, Federal University of Ceara, CP 6030, Fortaleza, CE, Brazil

^f São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, Sao Carlos, SP, Brazil

Abstract

Here we discovered an unprecedented giant octahedral coordination compound bearing 16 Zn²⁺, 12 Na⁺, 8 O²⁻, 4 OH⁻, 13 H₂O and 6 L⁴⁻ ligands [L⁴⁻ = fully deprotonated tetra(carboxymethoxy)calix[4]arene]. Its structure was elucidated by single-crystal X-ray diffraction, wavelength-dispersive X-ray spectroscopy and MALDI-TOF mass spectrometry. This compound, Zn₈Na₆L₆⊃Zn₈Na₆O₈(OH)₄(H₂O)₁₃ (external⊃internal), has eight tetrahedral zinc ions forming the coordination vertices of an outermost cube where carboxylate groups from the sodium calixarenes are anchored. Its core consists of eight Zn²⁺, six Na⁺, eight O²⁻, and four OH⁻ distributed over three layers, besides thirteen coordinated H₂O molecules.

Chemical Communications

A giant hybrid organic–inorganic octahedron from a narrow rim carboxylate calixarene†

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A giant hybrid organic–inorganic octahedron from a narrow rim carboxylate calixarene

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