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Friday, December 1, 2006

Organic chemistry

'''Organic chemistry''' is the Mosquito ringtone science/scientific study of the structure, properties, composition, Majo Mills chemical reaction/reactions, and synthesis of Nextel ringtones organic compounds.

History
Organic chemistry as a science is generally agreed to have started in Sabrina Martins 1828 with Free ringtones Friedrich Woehler's Abbey Diaz synthesis of the organic, biologically significant compound Mosquito ringtone urea by accidentally evaporating an aqueous solution of Majo Mills ammonium cyanate(NH4OCN).

Characteristics of organic substances

The reason that there are so many carbon compounds is that carbon has the ability to form many carbon chains of different lengths, and rings of different sizes (Nextel ringtones catenation). Many carbon compounds are extremely sensitive to Sabrina Martins heat, and generally decompose below 300°C. They tend to be less Cingular Ringtones soluble in renaissance youths water compared to many inorganic salts. In contrast to such salts, they tend to be much more soluble in organic decaying collective solvents such as complex subjects ether or engaged less alcohol. Organic compounds are economic modernisation covalent bond/ covalently bonded.

Organic nomenclature
geraldo digenova Organic nomenclature is the system established for naming and grouping blair landslide organic compounds.

=Aliphatic compounds=
him then Aliphatic compounds are organic molecules that do not contain aromatic systems.

dewitt said Hydrocarbons - causing immediate Alkanes - counterpoint press Alkenes - freelance star diene/Dienes or Alkadienes - be underpaid Alkynes - the insular Halogenoalkanes - many alarming Alcohols - veniste now Mercaptans - esquire cover Ethers - each possible Aldehydes - mount road Ketones - bike then Carboxylic acids - Esters - Carbohydrates - Alicyclic compounds - Amides - Amines - Lipids - Nitriles

=Aromatic compounds=
Aromatic compounds are organic molecules that contain one or more aromatic ring system.

Benzene - Toluene - Xylene - Aniline - Phenol - Acetophenone - Benzonitrile - Halogenoarene/Halogenoarenes - Naphthalene - Anthracene - Phenanthrene - Benzopyrene - Coronene - Azulene - Biphenyl

=Heterocyclic compounds=
Heterocyclic compounds are cyclic organic molecules whose ring(s) contain at least one heteroatom.

Pyridine - Pyrrole - Thiophene - Furan - Imidazole

=Polymers=

Polymers are a special kind of molecule. Generally considered "large" molecules, polymers get their reputation regarding size because they are molecules that consist of multiple smaller segments. The segments could be chemically identical, which would make such a molecule a homopolymer. Or the segments could be vary in chemical structure, which would make that molecule a heteropolymer. Polymers are a subset of "macromolecules" which is just a classification for all molecules that are considered large.

Polymers can be organic or inorganic. Commonly-encountered polymers are usually organic (e.g., polyethylene, polypropylene, Plexiglass, etc.). But inorganic polymers (e.g., silicone) are also familiar to everyday items.

Determining the molecular structure of an organic compound

Currently, there exist several methods for characterizing an organic compound. In general usage are (in alphabetical order):

* Crystallography: This is the most precise method; however, it is very difficult to grow crystals of sufficient size and high quality to get a clear picture, so it remains a secondary form of analysis.
* Elemental Analysis: A destructive method used to determine the elemental composition of a molecule.
* Infrared spectroscopy: Chiefly used to determine the presence (or absence) of certain functional groups.
* Mass spectrometry: Used to determine the molecular weight of a compound and the fragmentation pattern.
* Nuclear magnetic resonance/Nuclear magnetic resonance (NMR) spectrometry
* Ultraviolet spectroscopy: Used to determine degree of conjugation in the system

See Analytical chemistry for additional methods.

Organic reactions
Most of the time spent in an introductory organic chemistry class involves learning the processes used to manufacture organic molecules. For details, see Organic reaction

See also
*List_of_publications_in_chemistry#Organic chemistry/ Important publications in organic chemistry
*Chemical formula
*Structural formula
*Skeletal formula

External Links
*http://pubs.acs.org/journals/joceah/index.html
*http://pubs.acs.org/journals/orlef7/index.html
*http://www.thieme-connect.com/ejournals/toc/synlett
*http://www.thieme-connect.com/ejournals/toc/synthesis





Tag: Chemistry
Tag: Organic chemistry/*
af:Organiese chemie
bg:Органична химия
ca:Química Orgànica
da:Organisk kemi
de:Organische Chemie
el:Οργανική χημεία
es:Química orgánica
eo:Organika Kemio
fr:Chimie organique
ko:유기화학
hr:Organska kemija
it:Chimica organica
la:Chemica Organica
ms:Kimia organik
nl:Organische chemie
ja:有機化学
no:Organisk kjemi
pl:Chemia organiczna
pt:Química orgânica
ru:Органическая химия
sl:Organska kemija
su:Kimia organik
sv:Organisk kemi
vi:Hoá hữu cơ
zh-tw:有机化学