What absorbs at 1442 cm⁻¹ in an FTIR spectrum?
A band near 1442 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
त्वरित उत्तर
A band near 1442 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
संभावित कार्यात्मक-समूह असाइनमेंट
| कार्यात्मक समूह | समर्थन तथ्य | उद्धृत स्रोत | शीर्ष विश्वास |
|---|---|---|---|
| Alkyl C-H | 8 | 8 | 1.0 |
| Carboxyl (COOH) | 5 | 5 | 1.0 |
| Amide | 4 | 4 | 1.0 |
| Alkene (C=C) | 3 | 3 | 1.0 |
| Secondary amine | 3 | 3 | 1.0 |
| Carbonate | 3 | 3 | 1.0 |
| Methacrylate | 3 | 3 | 1.0 |
| Acetate | 3 | 3 | 1.0 |
| Aromatic ring | 3 | 3 | 1.0 |
| N h | 3 | 3 | 1.0 |
| Carbohydrate | 3 | 3 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Carbonyl (C=O) | 2 | 2 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Lewis acid site | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Methyl | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Ammonium | 1 | 1 | 1.0 |
| Boron nitrogen | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Nitro (NO2) | 1 | 0 | 1.0 |
| Nitrogen heterocycle | 1 | 0 | 1.0 |
रैंकिंग संचित साहित्य साक्ष्य को दर्शाती है, एक एकल आधिकारिक नियम नहीं। हमेशा अपने नमूना संदर्भ के खिलाफ पुष्टि करें।
संभावित सामग्री
सामग्री केवल तभी दिखाई जाती है जब एक ही साहित्य पूल इस बैंड और कम से कम एक अतिरिक्त विशेषता शिखर का समर्थन करता है।
स्पेक्ट्रम तर्क
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1442 cm⁻¹ is usually not enough for material identification by itself.
वास्तविक दुनिया का उपयोग
इस प्रकार की क्वेरी पॉलिमर पहचान, अज्ञात प्लास्टिक स्क्रीनिंग, QC समस्या निवारण, रिसाइकिल्ड-मटेरियल सत्यापन, और साहित्य-समर्थित पीक असाइनमेंट समीक्षा में आम है।
सामान्य गलतियाँ
- एक अलग बैंड को सामग्री का प्रमाण मानना, बिना कम से कम एक या दो सहायक शिखरों की जाँच किए।
- ओवरलैप को अनदेखा करना: एक ही तरंग संख्या के पास कई कार्यात्मक समूह योगदान कर सकते हैं।
- जब योजक, मिश्रण, ऑक्सीकरण, या संदूषण स्पेक्ट्रम को विकृत कर सकते हैं तो मान्यता छोड़ना।
सत्यापन सलाह
जब अस्पष्टता बनी रहती है, तो विशेष रूप से मिश्रण, अपमानित नमूनों और भरे हुए पॉलिमर के लिए DSC, GC-MS, या TGA से परिकल्पना को मान्य करें।
इन असाइनमेंट के पीछे का साहित्य
-
C c single bond विश्वास 1.0
“Intense band that appeared at 1442 could be due to the C-C stretching of the benzene and naphthalene rings and also the C-H in-plane bending modes of the aromatic rings [41, 45].”
Synthesis, crystal structures, quantum chemical studies and corrosion inhibition potentials of 4-(((4-ethylphenyl)imino)methyl)phenol and (E)-4-((naphthalen-2-ylimino) methyl) phenol Schiff bases DOI: 10.1016/j.molstruc.2017.06.104 -
Alkene (C=C) विश्वास 1.0
“Meanwhile, cm-1 another vibration in 1442 indicates C=C stretching 0.0 0.2 0.4 0.6 0.8 1.0”
Mohadi 等 - 2022 - Low-Cost Yet High-Performance Hydrochar Derived fr DOI: 10.22146/ijc.73353 -
N h विश्वास 1.0
“The peak at 1442 representing as(NH bound to (cid:228) that show the absence of N generation when NH is introduced 2 3 Brønsted acid sites, remains until 573 K, which is similar to over Mn/TiO with preadsorbed NO on the surface.”
Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122 -
Boron nitrogen विश्वास 1.0
“LLM confirmed rule peak-group candidate”
Sattanathan 等 - 2019 - Synthesis and characterization of hexagonal boron DOI: 10.1007/s13726-019-00757-9 -
Amide विश्वास 1.0
“The and a small shoulder peak at 1442 in the yeast spectrum Karolinska cm-1 amide II peak at 1547 (0 h, Fig.”
Shi 等 - 2018 - Biochemical alterations of Candida albicans during DOI: 10.1039/c8an01452c -
Carbohydrate विश्वास 1.0
“stretching and the N-H amines group was observed in peak assigned at 1516-1616 The 485 presence of cell wall polysaccharide (C-H) due to aliphatic stretching was observed at peak 1442 486”
Singh 等 - 2017 - Comprehensive characterization of lignocellulosic DOI: 10.1016/j.renene.2016.11.039 -
Alkyl C-H विश्वास 1.0
“After the exposure of PUE and PUC to 100h of UV irradiation, the emergence of C-H (scissoring) peak detected around 1442 cm-1 cm-1 and reduction of=C-H peak (wagging vibration) at 850”
Wong 等 - 2019 - Photo-activated self-healing bio-based polyurethan DOI: 10.1016/j.indcrop.2019.111613 -
N h विश्वास 1.0
“NH.65,66 cm-1 cm-1 group specified the bending band of They have assigned 1442 and 1572 cm-1 peaks CO, CN and COOH respectively and 2928 band was attributed to CH of CH 2”
Yadav 等 - 2021 - Evaluation of tire derived rubber (TDR) fixed biof DOI: 10.1080/09593330.2020.1737736
क्या इस बैंड के साथ कोई स्पेक्ट्रम है?
अपना FTIR स्पेक्ट्रम अपलोड करें और सेकंड में एक पूर्ण व्याख्या रिपोर्ट प्राप्त करें — साहित्य उद्धरणों, पुस्तकालय मिलानों, और विश्वास-रेटेड साक्ष्य श्रृंखला के साथ शिखर असाइनमेंट।