Matrix Isolation Studies of the Interactions of Cu Atoms with NO

Abstract

Matrix isolation studies of Cu vapors and NO in solid argon at 15 K have identified the 1:l complex Cu-(NO). Several isotopically-substituted NO reactants were reacted to better assign the few absorptions of this triatomic complex. Higher concentrations of NO were used to identify Cu(NO),, but for these complexes the vibrational absorptions were relatively weak, unlike similar Cu complexes where CO is the ligand. There was no indication that electron transfer had occurred between Cu and NO. Photolysis and annealing studies showed no changes in the IR spectra, suggesting that the Cu(N0) complex is unreactive with respect to the addition of additional NO ligands.

Density functional study of mononitrosyls of first-row transition-metal atoms

“…The result for CuNO has also been reported previously by Chiarelli et al 20 The experimental value for the NO harmonic frequency of FeNO is 1789 cm Ϫ1 and may be compared with our calculated Sc 1 1459͑1288͒ 574͑8͒ 281͑13͒ 279͑13͒ 3 1448͑1033͒ 572͑2͒ 288͑10͒ 283͑10͒ 5 1624͑235͒ 437͑26͒ 194͑4͒ 184͑5͒ Ti 2 1595͑571͒ 703͑2͒ 333͑15͒ 327͑15͒ 4 1578͑396͒ 596͑8͒ 272͑15͒ 263͑15͒ 6 1661͑109͒ 654͑42͒ 237͑3͒ 237͑3͒ V 1 2027͑856͒ 732͑1͒ 187͑19͒ 177͑19͒ 3 1608͑593͒ 661͑13͒ 328͑20͒ 325͑21͒ 5 1586͑464͒ 516͑4͒ 255͑17͒ 254͑17͒ 7 1581͑467͒ B3LYP calculations fail to predict reliably the NO frequencies in those complexes.…”

Vibrational Spectra and Structures of Nickel Mononitrosyl Complexes. An IR Matrix Isolation and DFT Study

“…Finally, it should be noticed that for both A and B species, some parallels can be made with previous studies on metal mononitrosyl complexes. On one hand, Chiarelli et al detected for the Cu 14 N 16 O complex, the Cu−N stretching mode at 608.8 cm -1 and the N−O stretching mode at 1610.5 cm -1 , which is comparable with the experimental data of NiNO (B) species. On the other hand, Andrews et al measured the N−O stretching mode of the Li + ON - complex at 1370 cm -1 , which is in the N−O stretching mode region of Ni:NO (A) species.…”

Flexible bonding between copper and nitric oxide: infrared photodissociation spectroscopy of copper nitrosyl cation complexes: [Cu(NO)n]+ (n = 1–5)

“…Neutral copper nitrosyl complexes have been prepared via the interaction of NO with copper atoms and were identified spectroscopically in a solid noble gas at cryogenic temperatures. [23][24][25] The reactivity of the copper cation with NO has been studied in the gas phase, [26][27][28] and the dissociation energies of [CuNO] + and [Cu(NO) 2 ] + were measured via the threshold collision-induced dissociation method. 29 The copper(II) nitrosyl cation, [CuNO] 2+ in strong acids was synthesized and characterized using IR and Raman spectroscopy.…”