New coordination features; A bridging pyridine and the forced shortest non-covalent distance between two CO3 2- species

Velasco, V. ; Aguilà, D. ; Barrios, L.A. ; Borilovic, I. ; Roubeau, O. (Universidad de Zaragoza) ; Ribas-Ariño, J. ; Fumanal, M. ; Teat, S.J. ; Aromí, G.

Resumen: The aerobic reaction of the multidentate ligand 2,6-bis-(3-oxo-3-(2-hydroxyphenyl)-propionyl)-pyridine, H4L, with Co(II) salts in strong basic conditions produces the clusters [Co-4(L)(2)(OH)(py)(7)]NO3 (1) and [Co8Na4(L)(4)(OH)(2)(CO3)(2)(py)(10)](BF4)(2) (2). Analysis of their structure unveils unusual coordination features including a very rare bridging pyridine ligand or two trapped carbonate anions within one coordination cage, forced to stay at an extremely close distance (d(O center dot center dot center dot O) = 1.946 angstrom). This unprecedented non-bonding proximity represents a meeting point between long covalent interactions and "intermolecular" contacts. These original motifs have been analysed here through DFT calculations, which have yielded interaction energies and the reduced repulsion energy experimented by both CO32 anions when located in close proximity inside the coordination cage.

Idioma: Inglés

DOI: 10.1039/c4sc02491e

Año: 2015

Publicado en: Chemical Science 6, 1 (2015), 123-131
ISSN: 2041-6520

Factor impacto JCR: 9.144 (2015)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 14 / 163 = 0.086 (2015) - Q1 - T1

Factor impacto SCIMAGO: 4.647 - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/CTQ2009-06959
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2011-24284

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)