arctan - the inverse function of the tangent; the angle that has a tangent equal to a given number. arc tangent, arctangent, inverse tangent. circular function, trigonometric function - function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle.
Best Answer: Benzene is a molecule (C6 H6) that has six carbons and six hydrogens in a conjugated system (alternating double bonds). The conjugated double bonds make Benzene aromatic.Aromatic describes conjugated ring systems (rings that feature a double bond for every other Carbon-Carbon bond such as seen with Benzene). However, aromatic rings can feature more than 6 carbons. Benzene is an example of an aromatic compound.Phenyl is usually used in the term Phenyl group. You can think of a phenyl group as what you call Benzene when it is a functional group for a larger molecule (or a substituent). One of benzene's hydrogens is replaced by the attachment of a more complex molecule.Source(s): One year college organic chemistry.henyl is usually used in the term Phenyl group. You can think of a phenyl group as what you call Benzene when it is a functional group for a larger molecule (or a substituent). One of benzene's hydrogens is replaced by the attachment of a more complex molecule. Source(s): One year college organic chemistry.
An aliphatic amine has no aromatic ring attached directly to the nitrogen atom. Aromatic amines have the nitrogen atom connected to an aromatic ring as in the various anilines.The aromatic ring decreases the alkalinity of the amine, depending on its substituents.he aromatic amines, such as aniline, have their lone pair electrons conjugated into the benzene ring, thus their tendency to engage in hydrogen bonding is diminished. Their boiling points are high and their solubility in water is low.