-ene
The suffix -ene is used in organic chemistry to form names of organic compounds where the -C=C- group has been attributed the highest priority according to the rules of organic nomenclature. Sometimes a number between hyphens is inserted before it to say that the double bond is between that atom and the atom with the next number up. This suffix is taken from the end of the word ethylene, which is the simplest alkene. The final "-e" disappears if it is followed by a suffix that starts with a vowel, e.g. "-enal" which is a compound that contains both a -C=C- bond and an aldehyde functional group. If the other suffix starts with a consonant or "y", the final "-e" remains, e.g. "-enediyne" (which has the "-ene" suffix and also the "-yne" suffix, for a compound with a double bond and two triple bonds.)
A Greek number prefix before the "-ene" indicates how many double bonds there are in the compound, e.g. butadiene.
The suffix "-ene" is also used in inorganic chemistry to indicate a one-atom thick two-dimensional layer of atoms, as in graphene, silicene, stanene, borophene, and germanene.
Ene River
The Ene River (Spanish: Río Ene) is a Peruvian river on the eastern slopes of the South American Andes.
Geography
The Ene is formed at 12°15′45″S 73°58′30″W / 12.26250°S 73.97500°W at the confluence of the Mantaro River and the Apurímac River, circa 400 m above sea level, where the three Peruvian Regions Junín, Cusco, and Ayacucho meet.
The river flows in a northwesterly direction at a total length of 180.6 km.
The Ene River is part of the headwaters of the Amazon River whose origin is at the Mismi south of Cuzco where it first becomes Apurímac River, then the Ene River and Tambo River before its waters meet the Ucayali River which later forms the Amazon.
At 11°09′39″S 74°14′48″W / 11.16083°S 74.24667°W the Ene River joins the Perené River at the town Puerto Prado, 295 m above sea level, and is called the Tambo from then on.
Threats
The proposed 2,200-megawatt Pakitzapango hydroelectric dam would flood much of the Ene River valley.
Ene (name)
Ene may be both a given name and a surname.
