Infrared absorption spectra of solutions of diazonium salts in the region of 2200?2300 cm?1

Kazitsyna, L. A.; Kikot, B. S.; Reutov, O. A.

doi:10.1007/bf01141637

Cited by 5 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…FT‐IR spectra of the reaction mixture (after 48 h) show the presence of solvated N 2 + species indicating that the diazo species is stable under the reaction conditions (Figure S8, Supporting Information). [ 31,32 ] Reaction of the diazonium salt with an incoming nucleophile can follow either free‐radical or a cationic mechanism. Scheme a shows all the possible reactive intermediates for p‐NBD in the presence of a nucleophile and Scheme 2b shows the various possible products.…”

Section: Resultsmentioning

confidence: 99%

“…FT-IR spectra of the reaction mixture (after 48 h) show the presence of solvated N 2 + species indicating that the diazo species is stable under the reaction conditions (Figure S8, Supporting Information). [31,32] Reaction of the diazonium salt with an incoming nucleophile can follow either free-radical or a cationic mecha- The presence of NO 2 peaks in FT-IR spectra of heated Sb-NS-NO 2 /Bi-NS-NO 2 indicates the preferential attachment via Sb-C/ Bi-C or Sb-O-C/Bi-O-C since azo linkages are generally not stable above 100 °C (Figure S6, Supporting Information). [33] N 1s core level XPS does not show any distinguishable peak for azo linkage because of overlap with residual solvent peak (Figure 3a).…”

Section: Reaction Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Covalent Functionalization of Antimonene and Bismuthene Nanosheets

Ayyub

Barua

Acharya

et al. 2022

Small

View full text Add to dashboard Cite

Antimonene and bismuthene are promising members of the 2D pnictogen family with their tunable band gaps, high electronic conductivity, and ambient stability, making them suitable for electronic and optoelectronic applications. However, semi‐metal to semiconductor transition occurs only in the mono/bilayer regime, limiting their applications. Covalent functionalization is a versatile method for tuning materials’ chemical, electronic, and optical properties and can be explored for tuning the properties of pnictogens. In this work, emissions in liquid exfoliated antimonene and bismuthene are observed at ≈2.23 and ≈2.33 eV, respectively. Covalent functionalization of antimonene and bismuthene with p‐nitrobenzene diazonium salt proceeds with the transfer of lone pairs from Sb/Bi to the diazonium salt, introducing organic moieties on the surface attached predominantly via Sb/BiC bonds. Consequently, Sb/Bi signatures in Raman and X‐ray photoelectron spectra are blue‐shifted, implying lattice distortion and charge transfer. Interestingly, emission can be tailored upon functionalization to 2.18 and 2.27 eV for antimonene and bismuthene respectively, and this opens the possibility of tuning the properties of pnictogens and related materials. This is the first report on covalent functionalization of antimonene and bismuthene. It sheds light on the reaction mechanism on pnictogen surfaces and demonstrates tunability of optical property and surface passivation.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Reaction Mechanismmentioning

confidence: 99%

Covalent Functionalization of Antimonene and Bismuthene Nanosheets

Ayyub

Barua

Acharya

et al. 2022

Small

View full text Add to dashboard Cite

show abstract

“…A measure of diazonium cations stability (and at the same time an indicator of their activity as electrophilic agents) can be, in particular, frequencies of stretching vibrations of the atomic group C-N + ≡N bonds [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Structure–Property Relationships for Aryldiazonia

Pankratov

Zhelezko

2002

IJMS

View full text Add to dashboard Cite

“…The phenyl group stabilizes the formation of PhN 2 + salts (phenyl diazonium salts) through the mesomeric effect, and unlike alkyl diazonium salts, aryl diazonium compounds are stable and characterized by N–N stretches in the ∼2250–2300 cm −1 region, more specifically ∼2270 cm −1 for phenyl diazonium in solution. 28 Indeed, we monitored the reaction of NO + and PhNH 2 , spectroscopically: the intensity of the NO + band diminished, and a new N–N stretch appeared at ∼2270 cm −1 , corresponding to the N–N vibration of the Ph–N 2 + fragment ( Fig. 4 ).…”

mentioning

confidence: 99%