The term removed refers to the number of generations separating the cousins themselves. So your first cousin once removed is the child (or parent) of your first cousin. Your second cousin once removed is the child (or parent) of your second cousin. And your first cousin twice removed is the grandchild (or grandparent) of your first cousin. Clearly, it doesn't take many generations before your family tree is a bit unwieldy.
A molecule can have more than one acyl halide functional group. For example, adipoyl dichloride, usually simply called adipoyl chloride, has two acyl chloride functional groups; see the structure at right.It is the dichloride (i.e., double chloride) of the 6-carbon dicarboxylic acid adipic acid.n acyl halide (also known as an acid halide) is a chemical compound derived from an oxoacid by replacing a hydroxyl group with a halide group. If the acid is a carboxylic acid, the compound contains a âCOX functional group, which consists of a carbonyl group singly bonded to a halogen atom.
The remaining adipoyl chloride molecule and the hexamethylenediamine molecule will join together to form a larger molecule (polymer). The molecule formed has an acid group at one end and an amine group at the other (Figure 1.3) and is a nylon 6,6 unit.ransfer the 10 mL of 1,6-hexanediamine into a 50 mL beaker and add 10 drops of the sodium hydroxide solution to it. Tilt the beaker with the 1,6-hexanediamine and the sodium hydroxide solution in it at a 45 degree angle and SLOWLY add the 10 mL of the adipoyl chloride solution to it.