@article{10272/22793,
year = {2012},
url = {https://hdl.handle.net/10272/22793},
abstract = {The use of the bulky hydrotris(3-mesitylpyrazolyl)borate anionic ligand has allowed the synthesis of stable TpMsCu(alkyne) complexes (alkyne = 1-hexyne, 1, phenylacetylene, 2, and ethyl propiolate, 3). The spectroscopic and structural features of these compounds and their relative reactivity have been examined, indicating the existence of a low π back-bonding from the copper(I) centre to the alkyne. Ligand exchange experiments have shown that terminal alkyne adducts are more stable than internal alkyne analogues. In good accordance with this, the previously reported alkyne cyclopropenation reaction catalysed by the TpxCu complexes can be rationalized and correlated with their relative stability},
organization = {We thank the MICINN (CTQ2008-00042/BQU) and the Junta de Andalucía (Proyecto P07-FQM-02794). C.M. thanks the Ministerio de Educación for a research fellowship},
publisher = {Royal Society of Chemistry},
title = {Hydrotris(3-mesitylpyrazolyl)borato-copper(i) alkyne complexes: synthesis, structural characterization and rationalization of their activities as alkyne cyclopropenation catalysts},
doi = {10.1039/C2DT11951J},
author = {Martín Gandul, Carmen and Sierra, Marta and Álvarez, Eleuterio and Rodríguez Belderraín, Tomás and Pérez Romero, Pedro José},
}