Remarkable Structural and Electronic Features of the Complex Formed by Trimeric Copper Pyrazolate with Pentaphosphaferrocene

Oleg A Filippov; Aleksei A Titov; Ekaterina A Guseva; Dmitry A Loginov; Alexander F Smol'yakov; Fedor M Dolgushin; Natalia V Belkova; Lina M Epstein; Elena S Shubina

doi:10.1002/chem.201502085

Remarkable Structural and Electronic Features of the Complex Formed by Trimeric Copper Pyrazolate with Pentaphosphaferrocene

Chemistry. 2015 Sep 14;21(38):13176-80. doi: 10.1002/chem.201502085.

Authors

Oleg A Filippov¹, Aleksei A Titov¹, Ekaterina A Guseva¹, Dmitry A Loginov¹, Alexander F Smol'yakov¹, Fedor M Dolgushin¹, Natalia V Belkova¹, Lina M Epstein¹, Elena S Shubina²

Affiliations

¹ A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28, 119991 Moscow (Russia).
² A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28, 119991 Moscow (Russia). shu@ineos.ac.ru.

PMID: 26332228
DOI: 10.1002/chem.201502085

Abstract

According to spectroscopic (NMR, IR, UV/Vis) study, the interaction of pentaphosphaferrocene [Cp*Fe(η(5) -P5 )] with trimeric copper pyrazolate [(Cu{3,5-(CF3 )2 Pz})3 ] yields a new compound that is astonishingly stable in solution. Single-crystal X-ray analysis reveals unprecedented structural changes in the interacting molecules and the unique type of coordination [Cp*Fe(μ3 -η(5) :η(2) ,η(2) -P5 ){Cu(3,5-(CF3 )2 Pz)}3 ]. As a result of the 90° macrocycle folding, the copper atoms are able to behave both as a Lewis acid and as a Lewis base in the interaction with the cyclo-P5 ligand.

Keywords: copper; ferrocenes; intermolecular interactions; structure determination; supramolecular chemistry.