An inorganic compound is a chemical compound that generally lacks carbon–hydrogen bonds, distinguishing it from an organic compound. The field studying these substances is known as inorganic chemistry. Inorganic compounds make up most of the Earth’s crust, though the compositions deeper in the mantle are still being explored. Many allotropes and simple carbon compounds, like the allotropes of carbon (including graphite, diamond, and graphene), as well as compounds such as carbon monoxide, carbon dioxide, carbides, and salts, are considered inorganic. These substances often occur naturally in organisms and living systems, illustrating inorganic chemistry’s broad relevance.
History
Friedrich Wöhler's conversion of ammonium cyanate into urea in 1828 is often cited as the starting point of modern organic chemistry.456 In Wöhler's era, there was widespread belief that organic compounds were characterized by a vital spirit. In the absence of vitalism, the distinction between inorganic and organic chemistry is merely semantic.
Modern usage
- The Inorganic Crystal Structure Database (ICSD) in its definition of "inorganic" carbon compounds, states that such compounds may contain either C-H or C-C bonds, but not both.7
- The book series Inorganic Syntheses does not define inorganic compounds. The majority of its content deals with metal complexes of organic ligands.8
- IUPAC does not offer a definition of "inorganic" or "inorganic compound" but does define inorganic polymer as "...skeletal structure that does not include carbon atoms."9
See also
- Inorganic compounds by element
- List of inorganic compounds
- List of named inorganic compounds
- Mineral acid
References
Berzelius, Jöns Jacob (1827). Lehrbuch der Chemie (1st ed.). Dresden and Leipzig: Arnoldischen Buchhandlung. ISBN 1-148-99953-1. Brief commentary can be found in Jorgensen, Bent Soren (1965). "More on Berzelius and the vital force". Journal of Chemical Education. 42 (7): 394. Bibcode:1965JChEd..42..394J. doi:10.1021/ed042p394. 1-148-99953-1 ↩
Dan Berger, Bluffton College, analysis of varying inappropriate definitions of the inorganic-organic distinction: Otherwise consistent linked material differing from current article in downplaying the carbon present vs carbon absent distinctive: [1] http://www.madsci.org/posts/archives/2000-12/975719013.Ch.r.html ↩
Newman, D. K.; Banfield, J. F. (2002). "Geomicrobiology: How Molecular-Scale Interactions Underpin Biogeochemical Systems". Science. 296 (5570): 1071–1077. Bibcode:2002Sci...296.1071N. doi:10.1126/science.1010716. PMID 12004119. S2CID 1235688. /wiki/Bibcode_(identifier) ↩
May, Paul. "Urea". Molecules in Motion. Imperial College London. Archived from the original on 2015-03-17. http://www.ch.ic.ac.uk/rzepa/mim/environmental/html/urea_text.htm ↩
Cohen, Paul S.; Cohen, Stephen M. (1996). "Wöhler's Synthesis of Urea: How do the Textbooks Report It?". Journal of Chemical Education. 73 (9): 883. doi:10.1021/ed073p883. /wiki/Doi_(identifier) ↩
Ramberg, Peter J. (2000). "The Death of Vitalism and the Birth of Organic Chemistry: Wohler's Urea Synthesis and the Disciplinary Identity of Organic Chemistry". Ambix. 47 (3): 170–195. doi:10.1179/amb.2000.47.3.170. PMID 11640223. S2CID 44613876. /wiki/Doi_(identifier) ↩
"Inorganic Crystal Structure Database" (PDF). Archived from the original (PDF) on 2017-08-30. Retrieved 2017-01-13. https://web.archive.org/web/20170830061100/https://icsd.fiz-karlsruhe.de/search/resources/content/sci_man_ICSD_v1.pdf ↩
"Volumes - Inorganic Syntheses". www.inorgsynth.org. http://www.inorgsynth.org/volumes.php ↩
IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "inorganic polymer". doi:10.1351/goldbook.IT07515 /wiki/International_Union_of_Pure_and_Applied_Chemistry ↩