Juan Pellegrino

Associate researcher - INQUIMAE CONICET - FCEN- UBA
Organometallic and Bioinorganic Chemistry

[Juan Pellegrino @juan_pell]

Hi @LatinXChem, this is my work “Reactions of electron-rich nitrosyl pincer PNP rhodium complexes”, #LatinXChem #LXChemInorg #Inorg039”

[Natali Tolaba @Ntltlb413]

Hi @LatinXChem ! I’m Natali and this is my work ‘Ni(II) Complexes with pincer ligands’.
#LatinXChem22 #LXChemInorg #Inorg51

[Sol Santalla @SantallaSol]

Hi @LatinXChem, I'm Sol Santalla, PhD Student at
@Inquimae1 @Exactas_UBA @CONICETDialoga , and this is my work “Transition metal complexes as catalysts for HER”, #LatinXChem22 #LXChemInorg #Inorg064

[LatinXChem @LatinXChem]

Ready, set, go!

Registration for #LXChem22 is now open! Spread the word, share it with your friends, invite everyone interested in discussing their chemistry research projects!

Registration link here:
https://t.co/9dXhuZGItF

[Juan Pellegrino @juan_pell]

@srsignorella @LatinXChem Anyway, 2 is produced almost quantitatively from the reaction of the {RhNO}10 complex 1 with O2. Once isolated, we will try to characterize it by EPR, DRX and try its reaction with C-X bonds, expecting halide abstraction, as previously found for related PCP {RhNO}9 complexes.

[Juan Pellegrino @juan_pell]

Hi @LatinXChem, this is my work “Reactions of electron-rich nitrosyl pincer PNP rhodium complexes”, #LatinXChem #LXChemInorg #Inorg039”

[Juan Pellegrino @juan_pell]

@srsignorella @LatinXChem Hi Sandra! Thanks! It is, as long as oxygen and moisture are carefully excluded. We are planning to prepare it independently from the {RhNO}9 complex 1+(dot) and a strong base such as KOtBu or KHMDS, that are usually employed to deprotonate the arm of pyridine-based PNP ligands.

[Juan Pellegrino @juan_pell]

@SkAmanullah @LatinXChem @iparamitasaha @DeyIACS Thanks for your answer! So where do the protons to produce HCOOH come from? Maybe from the macrocycle?

[Sk Amanullah @SkAmanullah]

Hola @LatinXChem!!! It's my pleasure to share our work (@iparamitasaha,@DeyIACS) on tuning the selectivity of CO2 reduction to formate using a cool iron-chlorin macrocycle (https://t.co/alygcTIj3r)!
Looking forward to your questions!
#LatinXChem2021, #LXChemInorg, #Inorg031

[Sol Santalla @SantallaSol]

Hi @LatinXChem, I'm Sol Santalla, PhD Student at
@Inquimae1 @Exactas_UBA, and this is my work “Synthesis, Structure and Reactivity of nitrosyl Pincer-Type Iron Complexes”, #LatinXChem #LXChemInorg #Inorg069

[Juan Pellegrino @juan_pell]

Thanks to @Inquimae1, @Exactas_UBA and @CONICETDialoga

[Matthew Chalkley @chalkley_talk]

Where do the electrons go: Fe, NO, or Borane? Take a look to find out (https://t.co/wpIZv5WlC9)!

Thanks to the Lehnert group and particularly Hai (@haidong1301) for collaborating on this study.

[LatinXChem @LatinXChem]

Mensaje de Clausura de LatinXChem dado por @theochemmerida y @nanoprofe.

https://t.co/MfmkOg4GCI

[Juan Pellegrino @juan_pell]

@cesapo 👏👏 Many thanks! It was a great experience! See you next time! 😀

[Juan Pellegrino @juan_pell]

@MariadelJesusR5 @LatinXChem As for the intermediate hydride species, it wasn´t observed in the experiments, the structure is proposed from DFT calculations. Probably that intermediate decomposes quickly in 2 and other unidentified species. Hope it is more clear now, please don´t hesitate to ask me again!

[Juan Pellegrino @juan_pell]

Hi @LatinXChem, this is my work “Redox behavior and structural characterization of nitrosyl pincer-type PNP rhodium complexes”, #LatinXChem #LatinXChemInorg #Inorg007”

[Juan Pellegrino @juan_pell]

@MariadelJesusR5 @LatinXChem Fortunately, there is a large shift in the IR stretching frequency when going from the 4-coordinate to the 5-coordinate one (from 1912 to 1690 cm-1, the both signals appearing in the IR figure). Both especies are in considerable amount in solution.

[Juan Pellegrino @juan_pell]

@MariadelJesusR5 @LatinXChem Hello Maria! Nice to here you liked the poster! The equilibrium shown is between the 4-coourdinate complex 1++ (with two OTf- as counteranions) and the 5-coordinate 1+ (with one OTf- as counteranion and the other one as the fifth ligand).

[Juan Pellegrino @juan_pell]

@chalkley_talk @LatinXChem Many thanks for the papers and your positive feedback!

[Juan Pellegrino @juan_pell]

@Miguel_A_Soto_ @LatinXChem @Inquimae1 Ok! Thank you!

[Juan Pellegrino @juan_pell]

@chalkley_talk @LatinXChem I have been using both CoCp2 and CoCp*2 as reductants for a long time and was not aware of their potential chemical non-innocence. I am now considering this possibility with my RhNO complexes.