Molecular recognition of Ca2+ cations by internal and external receptors/interfaces in a spherical porous molybdenum-oxide capsule: unusual coordination scenarios

Mirta Rubčić; Vladimir S. Korenev; Liviu Toma; Hartmut Bögge; Vladimir P. Fedin; Achim Müller

doi:10.1039/C4QI00131A

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Molecular recognition of Ca²⁺ cations by internal and external receptors/interfaces in a spherical porous molybdenum-oxide capsule: unusual coordination scenarios†

Mirta Rubčić,^a Vladimir S. Korenev,^b Liviu Toma,^a Hartmut Bögge,^a Vladimir P. Fedin^b and Achim Müller*^a

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* Corresponding authors

^a Fakultät für Chemie, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany
E-mail: a.mueller@uni-bielefeld.de
Fax: +49 521 106 6003
Tel: +49 521 106 6153

^b Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia

Abstract

The unique molybdenum-oxide capsule [{(Mo^VI)Mo^VI₅O₂₁(H₂O)₆}₁₂{Mo^V₂O₄(SO₄)}₃₀]⁷²⁻ shows an unprecedented affinity towards Ca²⁺ cations which interact in fully or partially hydrated forms with different well-defined internal and external receptor areas via direct coordination and/or hydrogen bonds. The cavity of the capsule comprises an unusual “water assembly” of the Ca₂₀{H₂O}₆₀ [triple bond, length as m-dash] Ca₂₀{(H₂O)₅}₁₂ type. Altogether, we can refer to a unique solid-state structure.

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Article information

DOI: https://doi.org/10.1039/C4QI00131A
Article type: Research Article
Submitted: 05 sep. 2014
Accepted: 22 sep. 2014
First published: 29 sep. 2014

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Inorg. Chem. Front., 2014,1, 740-744

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Molecular recognition of Ca²⁺ cations by internal and external receptors/interfaces in a spherical porous molybdenum-oxide capsule: unusual coordination scenarios

M. Rubčić, V. S. Korenev, L. Toma, H. Bögge, V. P. Fedin and A. Müller, Inorg. Chem. Front., 2014, 1, 740 DOI: 10.1039/C4QI00131A

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