Two-dimensional nuclear magnetic resonance spectroscopy
Two-Dimensional Nuclear Magnetic Resonance (2D NMR) is an advanced spectroscopic technique that builds upon the capabilities of one-dimensional Nuclear magnetic resonance (1D NMR) by incorporating an additional frequency dimension. This extension allows for a more comprehensive analysis of molecular structures.
Source: Wikipedia — Two-dimensional nuclear magnetic resonance spectroscopy (CC BY-SA 4.0)