Examlex
Explain why coal is considered non-renewable even though it is ultimately derived from the sun and comes from natural organic matter.
Equatorial
Referring to the position of substituents in a cyclohexane ring, where they are oriented parallel to the equator of the molecule, leading to less steric strain.
DEPT-135
A specialized NMR spectroscopy technique used to differentiate between CH, CH2, and CH3 groups in molecules.
Quaternary
Refers to the fourth-order structure in chemistry or the presence of four different groups attached to a central carbon atom.
Proton Spin Decoupled
A technique used in NMR spectroscopy where the interaction between different hydrogen nuclei ("spin coupling") is removed, simplifying the spectrum.
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