Organic compound - wikipedia Organic compound This article contains weasel words : vague phrasing that often accompanies biased or unverifiable information. Such statements should be clarified or removed. ( August 2017 ) Methane, CH ; it is one of the simplest organic compounds. An organic compound is virtually any chemical compound that contains carbon, although a consensus definition remains elusive and likely arbitrary. However, the traditional definition used by most chemists is limited to compounds containing a carbon - hydrogen bond. Organic compounds are rare terrestrially, but of central importance because all known life is based on organic compounds. The most basic petrochemicals are considered the building blocks of organic chemistry. Contents 1 Definitions of organic vs inorganic 2 History 2.1 Vitalism 2.2 Modern classification and ambiguities 3 Classification 3.1 Natural compounds 3.2 Synthetic compounds 3.3 Biotechnology 4 Databases 5 Structure determination 6 See also 7 References 8 External links Definitions of organic vs inorganic For historical reasons discussed below, a few types of carbon - containing compounds, such as carbides, carbonates, simple oxides of carbon ( for example, CO and CO ), and cyanides are considered inorganic. The distinction between organic and inorganic carbon compounds, while `` useful in organizing the vast subject of chemistry is somewhat arbitrary ''. Organic chemistry is the science concerned with all aspects of organic compounds. Organic synthesis is the methodology of their preparation. History Vitalism Main article : Vitalism For many centuries, Western physicians and chemists believed in vitalism. This was the widespread conception that substances found in organic nature are created from the chemical elements by the action of a `` vital force '' or `` life - force '' ( vis vitalis ) that only living organisms possess. Vitalism taught that these `` organic '' compounds were fundamentally different from the `` inorganic '' compounds that could be obtained from the elements by chemical manipulations. Vitalism survived for a while even after the rise of modern ideas about the atomic theory and chemical elements. It first came under question in 1824, when Friedrich Wöhler synthesized oxalic acid, a compound known to occur only in living organisms, from cyanogen. A more decisive experiment was Wöhler 's 1828 synthesis of urea from the inorganic salts potassium cyanate and ammonium sulfate. Urea had long been considered an `` organic '' compound, as it was known to occur only in the urine of living organisms. Wöhler 's experiments were followed by many others, in which increasingly complex `` organic '' substances were produced from `` inorganic '' ones without the involvement of any living organism. Modern classification and ambiguities The L - isoleucine molecule, C H NO, showing features typical of organic compounds. Carbon atoms are in black, hydrogens gray, oxygens red, and nitrogen blue. Even though vitalism has been discredited, scientific nomenclature retains the distinction between organic and inorganic compounds. The modern meaning of organic compound is any compound that contains a significant amount of carbon -- even though many of the organic compounds known today have no connection to any substance found in living organisms. The term carbogenic has been proposed by E.J. Corey as a modern alternative to organic, but this neologism remains relatively obscure. The organic compound L - isoleucine molecule presents some features typical of organic compounds : carbon -- carbon bonds, carbon -- hydrogen bonds, as well as covalent bonds from carbon to oxygen and to nitrogen. As described in detail below, any definition of organic compound that uses simple, broadly applicable criteria turns out to be unsatisfactory, to varying degrees. The modern, commonly accepted definition of organic compound essentially amounts to any carbon containing compound, excluding several classes of substances traditionally considered as ' inorganic '. However, the list of substances so excluded varies from author to author. Still, it is generally agreed upon that there are ( at least ) a few carbon containing compounds that should not be considered organic. For instance, almost all authorities would require the exclusion of alloys that contain carbon, including steel ( which contains cementite, Fe C ), as well as other metal and semimetal carbides ( including `` ionic '' carbides, e.g, Al C and CaC and `` covalent '' carbides, e.g. B C and SiC, and graphite intercalation compounds, e.g. KC ). Other compounds and materials that are considered ' inorganic ' by most authorities include : metal carbonates, simple oxides ( CO, CO, and arguably, C O ), the allotropes of carbon, cyanides excluding those containing an organic residue ( e.g., KCN, ( CN ), BrCN, CNO, etc. ), and heavier analogs thereof ( e.g., CP ' cyaphide anion ', CSe, COS ; although CS ' carbon disulfide ' is often classed as an organic solvent ). Halides of carbon without hydrogen ( e.g., CF and CClF ), carboranes, metal carbonyls ( e.g., nickel carbonyl ), mellitic anhydride ( C O ), and other exotic oxocarbons are also considered inorganic by some authorities. Nickel carbonyl ( Ni ( CO ) ) and other metal carbonyls present an interesting case. They are often volatile liquids, like other organic compounds, yet they contain only carbon bonded to a transition metal and to oxygen and are often prepared directly from metal and carbon monoxide. Nickel carbonyl is frequently considered to be organometallic. Although many organometallic chemists employ a broad definition, in which any compound containing a carbon - metal covalent bond is considered organometallic, it is debatable whether organometallic compounds form a subset of organic compounds. Metal complexes with organic ligands but no carbon - metal bonds ( e.g., Cu ( OAc ) ) are not considered organometallic ; instead they are classed as metalorganic. Likewise, it is also unclear whether metalorganic compounds should automatically be considered organic. The relatively narrow definition of organic compounds as those containing C-H bonds excludes compounds that are ( historically and practically ) considered organic. Neither urea nor oxalic acid is organic by this definition, yet they were two key compounds in the vitalism debate. The IUPAC Blue Book on organic nomenclature specifically mentions urea and oxalic acid. Other compounds lacking C-H bonds but traditionally considered organic include benzenehexol, mesoxalic acid, and carbon tetrachloride. Mellitic acid, which contains no C-H bonds, is considered a possible organic substance in Martian soil. Terrestrially, it, and its anhydride, mellitic anhydride, are associated with the mineral mellite. A slightly broader definition of organic compound includes all compounds bearing C-H or C-C bonds. This would still exclude urea. Moreover, this definition still leads to somewhat arbitrary divisions in sets of carbon - halogen compounds. For example, CF and CCl would be considered by this rule to be `` inorganic '', whereas CF H and CHCl would be organic, though these compounds share many physical and chemical properties. Classification Main article : Organic chemistry § Classification of organic compounds Organic compounds may be classified in a variety of ways. One major distinction is between natural and synthetic compounds. Organic compounds can also be classified or subdivided by the presence of heteroatoms, e.g., organometallic compounds, which feature bonds between carbon and a metal, and organophosphorus compounds, which feature bonds between carbon and a phosphorus. Another distinction, based on the size of organic compounds, distinguishes between small molecules and polymers. Natural compounds Natural compounds refer to those that are produced by plants or animals. Many of these are still extracted from natural sources because they would be more expensive to produce artificially. Examples include most sugars, some alkaloids and terpenoids, certain nutrients such as vitamin B, and, in general, those natural products with large or stereoisometrically complicated molecules present in reasonable concentrations in living organisms. Further compounds of prime importance in biochemistry are antigens, carbohydrates, enzymes, hormones, lipids and fatty acids, neurotransmitters, nucleic acids, proteins, peptides and amino acids, lectins, vitamins, and fats and oils. Synthetic compounds Compounds that are prepared by reaction of other compounds are known as `` synthetic ''. They may be either compounds that already are found in plants or animals or those that do not occur naturally. Most polymers ( a category that includes all plastics and rubbers ), are organic synthetic or semi-synthetic compounds. Biotechnology Many organic compounds -- two examples are ethanol and insulin -- are manufactured industrially using organisms such as bacteria and yeast. Typically, the DNA of an organism is altered to express compounds not ordinarily produced by the organism. Many such biotechnology - engineered compounds did not previously exist in nature. Databases The CAS database is the most comprehensive repository for data on organic compounds. The search tool SciFinder is offered. The Beilstein database contains information on 9.8 million substances, covers the scientific literature from 1771 to the present, and is today accessible via Reaxys. Structures and a large diversity of physical and chemical properties is available for each substance, with reference to original literature. PubChem contains 18.4 million entries on compounds and especially covers the field of medicinal chemistry. A great number of more specialized databases exist for diverse branches of organic chemistry. Structure determination Main article : Structure determination The main tools are proton and carbon - 13 NMR spectroscopy, IR Spectroscopy, Mass spectrometry, UV / Vis Spectroscopy and X-ray crystallography. See also Inorganic compounds List of chemical compounds List of organic compounds Organometallic compounds References ^ Jump up to : Spencer L. Seager, Michael R. Slabaugh. Chemistry for Today : general, organic, and biochemistry. Thomson Brooks / Cole, 2004, p. 342. ISBN 0 - 534 - 39969 - X Jump up ^ Smith, Cory. `` Petrochemicals ''. American Fuel & Petrochemical Manufacturers. American Fuel & Petrochemical Manufacturers. Retrieved 18 December 2016. Jump up ^ From the definition of `` organic compounds '' are also excluded automatically the allotropes of carbon such as diamond and graphite, because they are formed by atoms of the same element, so they are simple substances, not compounds. Jump up ^ Henry Marshall Leicester ; Herbert S. Klickstein ( 1951 ). A Source Book in Chemistry, 1400 - 1900. Harvard University Press. p. 309. Jump up ^ This is especially problematic, given recent evidence of covalent Fe - C bonding in cementite, a major component of steel ( https://arxiv.org/ftp/arxiv/papers/0711/0711.1528.pdf ). It 's unclear whether the definition of organometallic should be revised, or whether this implies that organometallic compounds are not necessarily organic. Jump up ^ `` IUPAC Blue Book, Urea and Its Derivatives Rule C - 971 ''. Retrieved 2009 - 11 - 22. Jump up ^ `` IUPAC Blue Book, Table 28 ( a ) Carboxylic acids and related groups. Unsubstituted parent structures ''. Retrieved 2009 - 11 - 22. Jump up ^ S.A. Benner ; K.G. Devine ; L.N. Matveeva ; D.H. Powell ( 2000 ). `` The missing organic molecules on Mars ''. Proceedings of the National Academy of Sciences. 97 ( 6 ) : 2425 -- 2430. Bibcode : 2000PNAS... 97.2425 B. doi : 10.1073 / pnas. 040539497. PMC 15945. PMID 10706606. Jump up ^ Ernö Pretsch, Philippe Bühlmann, Martin Badertscher ( 2009 ), Structure Determination of Organic Compounds ( Fourth, Revised and Enlarged Edition ). Springer - Verlag Berlin Heidelberg External links Organic Compounds Database Concepts in organic chemistry Aromaticity Covalent bonding Functional groups Nomenclature Organic compounds Organic reactions Organic synthesis Publications Spectroscopy Stereochemistry List of organic compounds Molecules detected in outer space Molecules Diatomic Aluminium monochloride Aluminium monofluoride Aluminium monoxide Argonium Carbon monophosphide Carbon monosulfide Carbon monoxide Carborundum Cyanogen radical Diatomic carbon Fluoromethylidynium Hydrogen chloride Hydrogen fluoride Hydrogen ( molecular ) Hydroxyl radical Iron ( II ) oxide Magnesium monohydride cation Methylidyne radical Nitric oxide Nitrogen ( molecular ) Nitrogen monohydride Nitrogen sulfide Oxygen ( molecular ) Phosphorus monoxide Phosphorus mononitride Potassium chloride Silicon carbide Silicon mononitride Silicon monoxide Silicon monosulfide Sodium chloride Sodium iodide Sulfur monohydride Sulfur monoxide Titanium oxide Triatomic Aluminium hydroxide Aluminium isocyanide Amino radical Carbon dioxide Carbonyl sulfide CCP radical Chloronium Diazenylium Dicarbon monoxide Disilicon carbide Ethynyl radical Formyl radical Hydrogen cyanide ( HCN ) Hydrogen isocyanide ( HNC ) Hydrogen sulfide Hydroperoxyl Iron cyanide Isoformyl Magnesium cyanide Magnesium isocyanide Methylene radical Nitrous oxide Nitroxyl Ozone Phosphaethyne Potassium cyanide Protonated molecular hydrogen Sodium cyanide Sodium hydroxide Silicon carbonitride c - Silicon dicarbide Silicon naphthalocyanine Sulfur dioxide Thioformyl Thioxoethenylidene Titanium dioxide Tricarbon Water Four atoms Acetylene Ammonia Cyanic acid Cyanoethynyl Cyclopropynylidyne Formaldehyde Fulminic acid HCCN Hydrogen peroxide Hydromagnesium isocyanide Isocyanic acid Isothiocyanic acid Ketenyl Methylene amidogen Methyl radical Propynylidyne Protonated carbon dioxide Protonated hydrogen cyanide Silicon tricarbide Thioformaldehyde Tricarbon monoxide Tricarbon sulfide Thiocyanic acid Five atoms Ammonium ion Butadiynyl Carbodiimide Cyanamide Cyanoacetylene Cyanoformaldehyde Cyanomethyl Cyclopropenylidene Formic acid Isocyanoacetylene Ketene Methane Methoxy radical Methylenimine Propadienylidene Protonated formaldehyde Protonated formaldehyde Silane Silicon - carbide cluster Six atoms Acetonitrile Cyanobutadiynyl radical E-Cyanomethanimine Cyclopropenone Diacetylene Ethylene Formamide HC N Ketenimine Methanethiol Methanol Methyl isocyanide Pentynylidyne Propynal Protonated cyanoacetylene Seven atoms Acetaldehyde Acrylonitrile Vinyl cyanide Cyanodiacetylene Ethylene oxide Hexatriynyl radical Methylacetylene Methylamine Methyl isocyanate Vinyl alcohol Eight atoms Acetic acid Aminoacetonitrile Cyanoallene Ethanimine Glycolaldehyde Heptatrienyl radical Hexapentaenylidene Methylcyanoacetylene Methyl formate Propenal Nine atoms Acetamide Cyanohexatriyne Cyanotriacetylene Dimethyl ether Ethanol Methyldiacetylene Octatetraynyl radical Propene Propionitrile Ten atoms or more Acetone Benzene Benzonitrile Buckminsterfullerene ( C fullerene, buckyball ) C fullerene Cyanodecapentayne Cyanopentaacetylene Cyanotetra - acetylene Ethylene glycol Ethyl formate Methyl acetate Methyl - cyano - diacetylene Methyltriacetylene Propanal n - Propyl cyanide Pyrimidine Deuterated molecules Ammonia Ammonium ion Formaldehyde Formyl radical Heavy water Hydrogen cyanide Hydrogen deuteride Hydrogen isocyanide Methylacetylene Trihydrogen cation Unconfirmed Anthracene Dihydroxyacetone Ethyl methyl ether Glycine Graphene H NCO Linear C Naphthalene cation Phosphine Pyrene Silylidine Related Abiogenesis Astrobiology Astrochemistry Atomic and molecular astrophysics Chemical formula Circumstellar envelope Cosmic dust Cosmic ray Cosmochemistry Diffuse interstellar band Earliest known life forms Extraterrestrial life Extraterrestrial liquid water Forbidden mechanism Helium hydride ion Homochirality Intergalactic dust Interplanetary medium Interstellar medium Photodissociation region Iron -- sulfur world theory Kerogen Molecules in stars Nexus for Exoplanet System Science Organic compound Outer space PAH world hypothesis Panspermia Polycyclic aromatic hydrocarbon ( PAH ) RNA world hypothesis Spectroscopy Tholin Book : Chemistry Category : Astrochemistry Category : Molecules Portal : Astrobiology Portal : Astronomy Portal : Chemistry NDL : 00574475 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Organic_compound&oldid=834277328 '' Categories : Organic compounds Organic chemistry Hidden categories : Articles with weasel words from August 2017 Talk Contents About Wikipedia Afrikaans Asturianu Azərbaycanca تۆرکجه বাংলা Bân - 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Question: how does vitalism theory explain the organic substances in nature
Answer: discredited