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Also contains definitions of: atomic ring-sector, bond ring-sector

A sequence of ring atoms, linked together as an unbranched chain and connecting two bridgeheads or junctions, but not itself containing any bridgehead or junction, is termed an atomic ring-sector. A bond linking together directly two bridgeheads or junctions is termed a bond ring-sector.
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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