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Molecules 2019, 24(1), 44;

Substitution Effect on the Charge Transfer Processes in Organo-Imido Lindqvist-Polyoxomolybdate

Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Av. Libertador Bernardo O’Higgins 3363, 9170022 Santiago, Chile
Centro para el Desarrollo de la Nanociencia y Nanotecnología, CEDENNA, 9170022 Santiago, Chile
Departamento de Ciencias Químicas, Universidad Andres Bello, Republica 275, 8370146 Santiago, Chile
Author to whom correspondence should be addressed.
Received: 1 December 2018 / Revised: 20 December 2018 / Accepted: 21 December 2018 / Published: 22 December 2018
(This article belongs to the Special Issue Polyoxometalates and Polyoxometalate-Based Systems)
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Two new aromatic organo-imido polyoxometalates with an electron donor triazole group ([n-Bu4N]2[Mo6O18NC6H4N3C2H2]) (1) and a highly conjugated fluorene ([n-Bu4N]2[Mo6O18NC13H9]) (2) have been obtained. The electrochemical and spectroscopic properties of several organo-imido systems were studied. These properties were analysed by the theoretical study of the redox potentials and by means of the excitation analysis, in order to understand the effect on the substitution of the organo-imido fragment and the effect of the interaction to a metal centre. Our results show a bathochromic shift related to the charge transfer processes induced by the increase of the conjugated character of the organic fragment. The cathodic shift obtained from the electrochemical studies reflects that the electronic communication and conjugation between the organic and inorganic fragments is the main reason of this phenomenon. View Full-Text
Keywords: organoimido; polyoxometalate; charge transfer; electronic properties; TD-DFT; Rhenium organoimido; polyoxometalate; charge transfer; electronic properties; TD-DFT; Rhenium

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Hermosilla-Ibáñez, P.; Wrighton-Araneda, K.; Cañón-Mancisidor, W.; Gutiérrez-Cutiño, M.; Paredes-García, V.; Venegas-Yazigi, D. Substitution Effect on the Charge Transfer Processes in Organo-Imido Lindqvist-Polyoxomolybdate. Molecules 2019, 24, 44.

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