IB Chemistry Topic S3.2.12 Structural Analysis Revision Notes (HL)

IB Chemistry Topic S3.2.12 Structural Analysis Revision Notes (HL) | RevisionDojo

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Techniques Used for Structural Analysis: Integrating Mass Spectrometry, IR Spectroscopy, and ¹H NMR Spectroscopy

Consider you’ve been handed a mystery compound.
Your mission? To uncover its structure. How would you solve this molecular puzzle?

Chemists rely on powerful analytical tools like Mass Spectrometry (MS), Infrared (IR) Spectroscopy, and Proton Nuclear Magnetic Resonance (¹H NMR) Spectroscopy.

What Each Technique Contributes

Mass spectrometry (MS)
1. Gives the relative molecular mass from the molecular ion peak, with structural clues from fragmentation and from M+2 chlorine and bromine isotope patterns (covered in S3.2.8).
Infrared (IR) spectroscopy
1. Identifies functional groups such as O–H, C=O and N–H from characteristic absorption bands (covered in S3.2.9).
Proton NMR (¹H NMR) spectroscopy
1. Reveals the number of hydrogen environments, the relative number of hydrogens from integration, and the number of neighbouring hydrogens from splitting patterns (covered in S3.2.10 and S3.2.11).

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Techniques Used for Structural Analysis: Integrating Mass Spectrometry, IR Spectroscopy, and ¹H NMR Spectroscopy

Consider you’ve been handed a mystery compound.
Your mission? To uncover its structure. How would you solve this molecular puzzle?

Chemists rely on powerful analytical tools like Mass Spectrometry (MS), Infrared (IR) Spectroscopy, and Proton Nuclear Magnetic Resonance (¹H NMR) Spectroscopy.

What Each Technique Contributes

Mass spectrometry (MS)
1. Gives the relative molecular mass from the molecular ion peak, with structural clues from fragmentation and from M+2 chlorine and bromine isotope patterns (covered in S3.2.8).
Infrared (IR) spectroscopy
1. Identifies functional groups such as O–H, C=O and N–H from characteristic absorption bands (covered in S3.2.9).
Proton NMR (¹H NMR) spectroscopy
1. Reveals the number of hydrogen environments, the relative number of hydrogens from integration, and the number of neighbouring hydrogens from splitting patterns (covered in S3.2.10 and S3.2.11).

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

IB Chemistry S3.2.12 Structural Analysis Notes

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

Techniques Used for Structural Analysis: Integrating Mass Spectrometry, IR Spectroscopy, and ¹H NMR Spectroscopy

What Each Technique Contributes

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Duis aute irure dolor in reprehenderit

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Techniques Used for Structural Analysis: Integrating Mass Spectrometry, IR Spectroscopy, and ¹H NMR Spectroscopy

What Each Technique Contributes

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Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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