Luminescent gold and silver complexes with the monophosphane 1-(PPh2)-2-Me-C2B10H10 and their conversion to gold micro- and superstructured materials

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Crespo, Olga
Díaz, Carlos
O'Dwyer, Colm
Gimeno, M. Concepción
Laguna, Antonio
Ospino, Isaura
Valenzuela, María Luisa
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American Chemical Society (ACS)
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Gold and silver complexes containing the monophosphane 1-PPh2-2-Me-l,2-C2B10H10 with different coordination numbers (2, 3) have been synthesized: [M(7,8-(PPh2)2-C2B9H10)(1-PPh2-2-Me-C2B10H10)] (M = Ag, Au) and [Au2(μ-1,n-C2B10H10)(1-PPh2-2-Me-C2B10H10)2] (n = 2, 12). Solid-state pyrolysis of [AuCl(1-PPh2-2-Me-C2B10H10)] and [Au2(μ-1,12-C2B10H10)(1-PPh2-2-Me-C2B10H10)2] in air and of solutions of [AuCl(1-PPh2-2-Me-C2B10H10)] deposited on silicon and silica at 800 °C results in single-crystal Au, confirmed by diffraction and SEM-EDS. The morphology of the pyrolytic products depends on the thermolytic conditions, and different novel 3-D superstructures or microcrystals are possible. We also propose a mechanism for the thermal conversion of these precursors to structural crystalline and phase pure materials. The presence of the carborane monophosphane seems to originate quenching of the luminescence at room temperature in the complexes [Au2(μ-1,n-C2B10H10)(1-PPh2-2-Me-C2B10H10)2], in comparison with other [Au2(μ-1,n-C2B10H10)L2] species (L = monophosphane).
Light-emitting-diodes , Nido-carborane-diphosphine , Crystal-structures , Triplet emitters , Excited-state , O-carborane , Derivatives , Transition , Oxidation , Ligands
Crespo, O., Dı́az, C., O’Dwyer, C., Gimeno, M. C., Laguna, A., Ospino, I. and Valenzuela, M. L. (2014) 'Luminescent Gold and Silver Complexes with the Monophosphane 1-(PPh2)-2-Me-C2B10H10 and Their Conversion to Gold Micro- and Superstructured Materials', Inorganic Chemistry, 53(14), pp. 7260-7269. doi: 10.1021/ic5005424
© 2014 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see