Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or reflection. It is used to study …

The category of EM radiation is termed infrared (IR) radiation, and its application to organic chemistry known as IR spectroscopy. Radiation in this region can be utilized in organic structure determination …

Nov 23, 2016 · We can observe and measure this “singing” of bonds by applying IR radiation to a sample and measuring the frequencies at which the radiation is absorbed. The result is a technique …

Jul 2, 2025 · An IR spectrum is typically plotted as transmittance (or absorbance) versus wavenumber (cm -1). Wavenumber, the reciprocal of wavelength, is directly proportional to frequency and energy, …

This is a practical guide that’ll teach you everything you need to know about IR, especially how to solve IR spectra and answer exam questions. That’s exactly what you’re going to be tested on.

On the immediate high energy side of the visible spectrum lies the ultraviolet, and on the low energy side is the infrared.

Nov 29, 2025 · Infrared spectroscopy historically has been divided into three regions: the near infrared (4,000–12,500 inverse centimetres [cm−1]), the mid-infrared (400–4,000 cm−1), and the far infrared …

On the high-energy side of the visible spectrum lies the ultraviolet (UV) region, while on the low-energy side lies the infrared (IR) region. The infrared region, in particular, is of great importance in chemistry …

An infrared spectrometer analyses a compound by passing infrared radiation, over a range of different frequencies, through a sample and measuring the absorptions made by each type of bond in the …

With a basic understanding of IR theory, we will now take a look at the actual output from IR spectroscopy experiments and learn how to get structural information from the IR spectrum.