Limonene, C10H16 , is a cyclic (6-membered ring) monoterpene. It has a small molecular size but it is more complicated than one might think because it has an internal variety of shapes & angles.
The following reference gives an idea about the inter-atomic distances in this hydrocarbon:
Limonene is a clear, colorless liquid hydrocarbon classified as a cyclic monoterpene, and is the major component in the oil of citrus fruit peels. The D-isomer, occurring more commonly in nature as the fragrance of oranges, is a flavoring agent in food manufacturing. It is also used in chemical synthesis as a precursor to carvone and as a renewables-based solvent in cleaning products. The less common L-isomer is found in mint oils and has a piny, turpentine-like odor.
Limonene takes its name from the peel of the lemon. Limonene is a chiral molecule, and biological sources produce one enantiomer: the principal industrial source, citrus fruit, contains D-limonene ((+)-limonene), which is the (R)-enantiomer, Racemic limonene is known as dipentene.
Limonene is a clear, colorless liquid hydrocarbon classified as a cyclic monoterpene, and is the major component in the oil of citrus fruit peels. The D-isomer, occurring more commonly in nature as the fragrance of oranges, is a flavoring agent in food manufacturing. It is also used in chemical synthesis as a precursor to carvone and as a renewables-based solvent in cleaning products. The less common L-isomer is found in mint oils and has a piny, turpentine-like odor.
Limonene takes its name from the peel of the lemon. Limonene is a chiral molecule, and biological sources produce one enantiomer: the principal industrial source, citrus fruit, contains D-limonene ((+)-limonene), which is the (R)-enantiomer, Racemiclimonene is known as dipentene.
As you are going know the size of Limonene, observe it under microscope
if you prepare a nanoparticles of it you can go for SEM,TEM and AFM techniques where you get all information like size of your compound, topography and shape of it.