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III. ALLOWED PARENT STRUCTURES
III.1. Chains
All types of homogeneous and heterogeneous chains are supported within the mentioned restrictions:
- Carbon chains (e.g. tricosane)
- Homogeneous hetero chains (e.g., hydrazines, phosphanes, silanes)
- "a"-nomenclature chains (i.e., 2,5,8,11-tetraoxadodecane)
- Alternating chains (e.g., tetrasiloxane)
For example:
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| Tetrasiloxane |
4-oxa-2-thia-6-phospha-5-silaoctane |
III.2. Cyclic Systems
Monocycles
All types of monocycles are supported within the mentioned restrictions:
- Carbomonocycles
- Heteromonocycles with Hantzsch-Widman names
- Heteromonocycles with "a"-nomenclature names
- Alternating monocycles
- Homo heteromonocycles
For example:
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| IUPAC Name |
4H-1,4-oxaphosphinine |
| Index Name |
4H-1,4-oxaphosphorin |
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| IUPAC Name |
1,4,10,13-tetrathia-7,16-diazacyclooctadecane |
| Index Name |
1,4,10,13-tetrathia-7,16-diazacyclooctadecane |
Polycycles
The following types of polycyclic systems are supported:
- Bridged (von Baeyer) polycycles.
- Fused systems, including multi-parent fused systems with single connecting component.
- Spiro systems, with mono- and polycyclic components.
- Bridged fused systems with no more than two bivalent or single unbranched acyclic trivalent bridges.
- Assemblies of cyclic systems.
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| IUPAC Name |
3H-dispiro[1-benzofuran-2,1'-cyclohex[2]ene-4',2''-indole] |
| Index Name |
dispiro[benzofuran-2(3H),1'-cyclohex[2]ene-4',2''-[2H]indole] |
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| IUPAC Name |
7,8,9,10-tetrahydro-1,4-epoxy-7,10-(epoxymethano)cycloocta[b]acridine |
| Index Name |
9,12-epoxy-1,4-ethano-1H-oxocino[4,3-b]acridine, 3,4-dihydro- |
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| IUPAC Name |
2,2':6',2''-terpyridine-4,4''(1H,1''H)-dione |
| Index Name |
[2,2':6',2''-terpyridine]-4,4''(1H,1''H)-dione |
The following types of polycyclic systems are not supported:
- Bridged fused systems more complex than specified above.
- Other special types, e.g., Cyclophanes, Fullerenes.
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