José Manuel Riveros Nigra, Paraguayan-born Brazilian physical chemist (Asunción 16 April 1940 –

Made importante contributions to the field gas phase -ion-molecule reactions using a combination of mass spectrometric techniques and electronic structure calculations

With S.M. José & K. Takashima. A novel reaction to generate anion adducts in the gas phase (1989)

With P. C. Isolani, H.V. Linnert, M.C. Kida-Tinone et al. Construção e desempenho de um espectrômetro de massa por transformada de Fourier. Quim. Nova 15:351-3, 1992

With Z. Zhu. A kinetic method to distinguish isomeric C₃H₅⁺ cations. Rapid Comm.Mass. Spectrom. 5:387-90, 1991

A paper helpful in elucidating the planar structure of the methyl radical

An harmonic of the out-of-plane vibration of methyl radical. J. Chem. Phys. 51:1269, 1969

A relevant paper

With A.C. Breda & L.K. Blair. Formation and relative stability of chloride cluster ions in the gas phase by ion ciclotron resonance. J. Am. Chem. Soc. 95:4066, 1973

Riveros reaction

Described Riveros reaction or α-elimination of CO leading to the carbonylation of the esther, an efficient way of generating  a solvated ion in the gas phase at low pressures (1968)

With L.K. Blair & P.C. Isolani. Formation, reactivity and relative stability of clustered alkoxide ions by ion ciclotron resonance spectroscopy. J. Am. Chem. Soc. 95:1057-60, 1973 (first to report Riveros reaction)

With J.F. Faigle & P.C. Isolani. The gas phase reaction of F^– and OH^– with alkyl formates. J. Am. Chem. Soc. 98:2049, 1976 (described de facto Riveros reaction)

Demonstrated that benzyne has a much higher thermochemical stability than originally proposed and opened new paths in the study of benzyne related reactions

With S. Ingemann & N.M.M. Nibbering. Formation of gas phase solvated Br^– and I^– in ion/molecule reactions of halobenzenes. Revised heat of formation of benzyne. J. Am. Chem. Soc. 113:1053, 1991

Developed a methodology for the calculation of the solvation free energy of ionic species

With R. Pliego Jr. The cluster-continuum model for the calculation of the solvation free energy of ionic species. J. Phys. Chem. A 105:7241, 2001

Demonstrated the possibility of a concerted mechanism in nucleophilic aromatic reactions and that has led to the discovery of a series of similar reactions in condensed phases

With T. Giroldo & L.A. Xavier. An unusually fast nucleophilic aromatic displacement reaction: the gas phase of flouride ions with nitrobenzene. Angew. Chemie Int. Ed. 43:5588, 2004 

LINKS

https://brjac.com.br/artigos/2021-V8-10Years/interviews/BrJAC-2020-V7-N27-Interview-Jose-Riveros.pdf