Hydrocarbons Diene: fausaga, isomerism ma nomenclature

hydrocarbons Diene (diolefins alkadienes dienes) - hydrocarbons faatumulia, i le faatulagaga o loo i ai ni noataga faaluaina lua. Mafaufau i le alkadienes fausaga vailaau ua vaevaeina i ituaiga e tolu: ou ta - o se noataga diolefins cumulated (SN2SSN2); Ituaiga II - alkadienes ma conjugation (conjugated) linkages; faaluaina noataga i le faatulagaga diene ua ma valavala ai i se sootaga e tasi (N2SSNSNSN2); Ituaiga III - dienes ma fesootaiga insulated (N2SSN2SN2SNSN2).

hydrocarbons Diene: uiga lautele

O le ituaiga o dienes tolu fiafia sili i le ituaiga alamanuia vailaau II o alkadienes. Faaaogaina electron maua e toe o noataga lua i le molecule butadiene va C1 ma C4 nai lo molecule ethylene.

hydrocarbons Diene: isomerism

Mo nei tuufaatasi faatulagaina faamatalaina e lua ituaiga o isomerism - spatial (stereoisomerism) ma fausaga. O le ituaiga muamua - filifili hydrocarbon isomerism faatulagaga lea e mafai ona saʻo pe branched. O le ituaiga lona lua o isomerism ua mafua ona o localization spatial o atoms ma vaega atomika i le noataga lua. Faapea ona faia dienes solitulafono ma cis-isomers. Mo se faataitaiga, mo se S5N8 molecular diene fuafaatatau o loo isomers fausaga tolu:

SN2SNSN2SNSN2; CH2C (CH3) SNSN2; SN3SNSNSN2.

hydrocarbons Diene: nomenclature

Mo diene igoa faaaoga lua nomenclatures - talafaasolopito (eg, divines Allen) ma IUPAC (International Union o theoretically ma faaaogaina le kemisi). E tusa ai ma le nomenclature IUPAC, muamua taʻua diene tutusa alkane, i le suafa lea o le "en" ua suia i le suffix "diene", lea o le fuainumera faailoa ai le nofoaga o le localization o le lua sootaga i le filifili hydrocarbon. ua faia fuainumera filifili hydrocarbon ina ia le numera o le taua sili ona maualalo. dienes o le fua faatatau ua tuuina i luga IUPAC a faasinomia nomenclature e faapea: 1,4-pentadiene; 2-methyl-1,3-butadiene; 1,3-pentadiene.

O loo i ai le tele o alamanuia ma tuufaatasia diene metotia fale suesue. O le tagata autu o le depolymerization o paʻu faalenatura (matutu distillation), o le auala dehydration catalytic o alkanes, dehydration auala monohydric faatumulia alcohols.

Butadiene - o se mea mata taua mo le tuuina rubbers gaosi (nitrile, butadiene, styrene), faapea foi perchlorovinyl. Isoprene - o se mea i se manogi uiga. isoprene muamua gaosia mai le paʻu o le lalolagi e distillation matutu. na saunia foi Isoprene e dehydration o isopentane. Faaaogaina e maua paʻu gaosi, vailaau ma vailaau ituaiga laau manogi.

Rubbers - lava mea malosi ma le ofuvae o tupuaga faatulagaina lea ua tuuina mai le mea e masani faalenatura (paʻu faalenatura) ma metotia gaosi (gaosi). O le faavae o le paʻu o conjugation molecule diene i noataga lua. O le paʻu faatupulaia i le taimi o le faagasologa o le teio mea ma faʻavevela (vulcanization). Rubbers - o se taua tele mea mata mo le tuuina atu o le vaivai ma tubes, e talitali ai fasi pepa, mittens paʻu, seevae ma isi mea e faaaoga i le galuega, aiga, i aiga, vailaau faafomai ma mo tipiga o manu.

hydrocarbons Ethylenic io latou faatulagaga e tasi fusi lua. O nisi taimi o loo faatatau i nei tuufaatasi olefins ona o le alkenes gaseous maualalo le tali ma chlorine po bromine e fai ai se lotoa o suauu, ua insoluble i le vai.

hydrocarbons Acetylenic (alkynes) - tuufaatasi, ua i ai se tasi fusi tolu. O le aoga maualuga o o alkynes uma o acetylene lea e maua e ala i le tali carbide kalisiu i le vai. Lenei kasa o loo faaaogaina i le maopoopo autogenous ma tipiina uʻamea. Acetylene - o se mea mata taua mo le tuuina atu o ethylene, ethanol, acetaldehyde, acetylene vinyl, acetate acid, benzene, trichloroethane, acrylonitrile.