Medical Definition of Closed chain compound

1. Any compound in which the constituent atoms, or any part of them, form a ring. Used mainly in organic chemistry where: 1) numerous compound's contain rings of carbon atoms (carbocyclic compound's) or carbon atoms plus one or more atoms of other types (heterocyclic compound's), usually nitrogen, oxygen, or sulfur; 2) where the atoms in the ring are all of the same element (homocyclic or isocyclic compound); 3) where the ring is saturated or contains nonconjugated double bonds (alicyclic compound), the compound is similar in properties to the corresponding acyclic compound (e.g., cyclohexane resembles hexane); 4) where the ring contains conjugated double bonds in a closed loop in which there are 4n + 2 (where n is an integer) delocalised π electrons (Huckel's rule) (aromatic compound; e.g., benzene, pyridine), it is more stable than the corresponding saturated ring and exhibits unusual chemical properties characteristic of itself and not of other types of rings or of acyclic compound's. These aromatic compounds have the ability to sustain an induced ring current. Synonym: closed chain compound, ring compound. (05 Mar 2000)

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Lexicographical Neighbors of Closed Chain Compound

closed-loop system
closed anaesthesia
closed ball
closed beta
closed bite
closed book
closed books
closed caption
closed captioning
closed captions
closed chain
closed chain compound (current term)
closed circle
closed circuit
closed circuit method
closed circuits
closed circulatory system
closed comedo
closed compound
closed compounds
closed corporation
closed couplet
closed curve
closed cut valley
closed dislocation

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