Porphin

Porphin

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ImageFile = Porphyrin.svg
ImageSize=
IUPACName=
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Section1=Chembox Identifiers
CASNo=
PubChem=66868
SMILES=C1=CC2=CC3=CC=C(N3)C=C4C=CC(=N4)C=C5C=CC(=N5)C=C1N2
Section2=Chembox Properties
Formula=C20H14N4
MolarMass=310.35196 g/mol
Appearance=
Density=
MeltingPt=
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Section3=Chembox Hazards
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Porphin, sometimes spelled porphine, is the parent chemical compound for types of biochemically significant compounds called porphyrins. The chemical formula of porphin is C20H14N4. Porphin is an organic compound that is aromatic and heterocyclic since its chemical structure, shown at right, essentially consists of four pyrrole rings joined together by four methine (=CH—) groups to form a larger macrocycle ring. The compound itself is a solid.

tructural characteristics of porphin

Around the perimeter of the macrocycle ring, there is a cyclic chain of sp2 hybridized carbon atoms, all of which are part of a conjugated double bond system, giving the molecule its aromatic character. Resonance structures for porphin can be drawn as shown below here.

The aromatic character of porphin stems both from its conjugation as well as its flat or planar geometry, meaning that all the atoms lie in a single plane. Bonded to the cyclic chain of carbons are four nitrogen atoms facing the center of the molecule, two of which are bonded to hydrogen atoms and the other two nitrogens forming part of the conjugated double bond system.

References


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Look at other dictionaries:

  • Porphin — Strukturformel Allgemeines Name Porphin Andere Namen …   Deutsch Wikipedia

  • Porphin — Por|phin: Kurzw. für ↑ Porphyrin. * * * Porphin   [zu Porphyr] das, s, Porphyrin, dunkelrote, kristalline Substanz; chemisch ein makrozyklisches, mesomeriestabilisiertes Ringsystem, das in den Porphinfarbstoffen als Chromophor enthalten ist; es… …   Universal-Lexikon

  • porphin — porfinas statusas T sritis chemija apibrėžtis Ciklinis junginys, kuriame keturi pirolo žiedai susijungę =CH– tilteliais. formulė C₂₀H₁₄N₄ atitikmenys: angl. porphin; porphine rus. порфин …   Chemijos terminų aiškinamasis žodynas

  • porphin — noun A ring or four pyrrole rings linked by methine groups; it is the structure at the centre of hemoglobin, chlorophyll and other porphyrins …   Wiktionary

  • porphin — por·phin pȯr fən also por·phine .fēn n a deep purple crystalline compound C20H14N4 that is made synthetically from pyrrole and formaldehyde, contains four pyrrole rings joined by =CH groups so as to give a heterocyclic arrangement, and forms the …   Medical dictionary

  • Porphin — Por|phi̱n [zu gr. πορϕυρα = Purpurschnecke; Purpur] s; s, e: Grundsubstanz der ↑Porphyrine, eine aus vier Pyrrolringen aufgebaute organische Verbindung (Chem.) …   Das Wörterbuch medizinischer Fachausdrücke

  • Porphin — Por|phin das; s, e <zu ↑Porphyr u. ↑...in> Grundsubstanz der Porphyrine …   Das große Fremdwörterbuch

  • porphin — por·phin …   English syllables

  • porphin — n. a complex nitrogen containing ring structure and parent compound of the porphyrins …   The new mediacal dictionary

  • porphin — …   Useful english dictionary

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