Perchlorate — FTIR absorption peaks and assignments

Quick answer

Perchlorate is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.

Characteristic FTIR peaks for Perchlorate

Spectrum logic

A functional-group assignment becomes more reliable when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.

Real-world usage

These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.

Common mistakes

• Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
• Assuming the strongest band is always the most diagnostic one.
• Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.

Verification advice

Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.

Litteratur bag disse tildelinger

• 939 cm⁻¹ tillid 1,0

  “The band at 939 is undoubtedly assigned to the v band of perchlorate ions which form contact ion pairs with |”

  Chen 等 - 2004 - ATR-FTIR spectroscopic studies on aqueous LiClO4, DOI: 10.1039/B311768E
• 610 cm⁻¹ tillid 1,0

  “The ClO4 bands are featured by two peaks extending from 610 to 630 cm-1, which indicates that, at most, two dissimilar sorts of ClO4 anions are present in this material.”

  Electrochemical and Ion Transport Studies of Li+ Ion-Conducting MC-Based Biopolymer Blend Electrolytes DOI: 10.3390/ijms23169152
• 730 cm⁻¹ tillid 1,0

  “The 4) and EC solution, considerable a lithium perchlorate (LiClO cm-1 gel exhibits predominantly ionic nature and a 0.67 of appear corresponding to the shoulders at 730 and 900 cm-1 lithium ion transference number.”

  Electrical and structural studies of a LiBOB-based gel polymer electrolyte DOI: 10.1007/s11581-016-1834-7
• 1101 cm⁻¹ tillid 1,0

  “cm-1 molecules,31,32 observed at 1040 are assigned to the AN voltammetric peaks nearly from the beginning, due to the quick cm-1 while the peak at 1101 has been reported as being due to interchange of the perchlorate anions.”

  Romero 等 - 2005 - In situ FTIR spectroscopy study of the break-in ph DOI: 10.1021/jp054026u
• 1130 cm⁻¹ tillid 1,0

  “In sharp perchlorate stretching mode at 1130 depletes with more”

  Influence of water on the hydrogen evolution reaction on a gold electrode in acetonitrile solution DOI: 10.1016/j.jelechem.2016.08.018
• 1162 cm⁻¹ tillid 1,0

  “The band at 1162 stretching merization solution with another free of monomer without losing could be assigned to the perchlorate ions, which are exchanged the potential control.”

  Spectroelectrochemical studies of poly(N-methylaniline) formation, redox behaviour and degradation. A comparison with polyaniline DOI: 10.1016/j.electacta.2013.10.179
• 619 cm⁻¹ tillid 1,0

  “Peaks at 619 and 1108 associated with various Open vibrations of the perchlorate ion were persistently observed.”

  Combined thermal and FTIR analysis of porous silicon based nano-energetic films DOI: 10.1039/c6ra27028j
• 623 cm⁻¹ tillid 1,0

  “In these inset plots, the intensity of bands at 623 assigned to the free anion was normalized to band intensities that do not depend on the lithium perchlorate concentration.”

  Plasticizers and Salt Concentrations Effects on Polymer Gel Electrolytes Based on Poly (Methyl Methacrylate) for Electrochemical Applications DOI: 10.3390/gels8060363