RT Journal Article
T1 Extending the Boundaries With Electron‐Rich Tris(pyridyl)borates in Classical Silver and Gold Carbonyl Complexes
A1 Vanga, Mukundam
A1 Rajathunga, Achala M.
A1 Fernández López, Israel
A1 Rasika Dias, H. V.
AB This study reports the synthesis, structures, and bonding of silver(I) and gold(I) carbonyl complexes supported by a bulky, mesityl-group-decorated, electron-rich tris(pyridyl)borate ligand. This ligand offers steric protection and strong σ-donation, allowing isolation of classical carbonyls [MeB(6-(Mes)Py)3]Ag(CO) and [MeB(6-(Mes)Py)3]Au(CO). Both show notably low CO stretching frequencies (2115 and 2063 cm−1), lowest for structurally authenticated Ag(I)–CO and Au(I) species, respectively, indicating enhanced metal→CO π-backbonding. X-ray crystallography shows tetrahedral κ3-NNN coordination and linear M–C–O fragments (M = Ag, Au), while 13C NMR spectrum of the silver complex reveals 107/109Ag-13C coupling. Computational studies indicate that electrostatic interactions dominate the interaction between M and CO, but gold(I) shows stronger orbital contributions and π-backdonation than silver(I), consistent with experimental trends. Buried-volume calculations highlight the ligand’s steric bulk. These findings expand the chemistry of isolable Ag(I) and Au(I) carbonyls, providing examples of classical CO complexes and insights into bonding and stabilization strategies. Spectroscopic data on the copper analog, [MeB(6-(Mes)Py)3]Cu(CO), have also been included for comparison.
PB Wiley
YR 2026
FD 2026-04-28
LK https://hdl.handle.net/20.500.14352/137042
UL https://hdl.handle.net/20.500.14352/137042
LA eng
NO Vanga, Mukundam, et al. «Extending the Boundaries With Electron‐Rich Tris(Pyridyl)Borates in Classical Silver and Gold Carbonyl Complexes». ChemistryEurope, vol. 4, n.o 5, mayo de 2026, p. e70308. DOI.org (Crossref), https://doi.org/10.1002/ceur.70308.
NO University of Texas at Arlington
NO Ministerio de Ciencia, Innovación y Universidades
NO Agencia Estatal de Investigación
NO U.S. Department of Agriculture
DS Docta Complutense
RD 14 jun 2026