Chemistry:4-Iodobenzoic acid

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4-Iodobenzoic acid
4-iodobenzoic acid structure.png
4-iodobenzoic acid 3d.png
4-iodobenzoic acid.jpg
Names
Preferred IUPAC name
4-Iodobenzoic acid
Other names
p-Iodobenzoic acid
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
EC Number
  • 210-603-2
UNII
Properties
C7H5IO2
Molar mass 248.019 g·mol−1
Appearance white solid
Density 2.18 g/cm3
Melting point 270–273 °C (518–523 °F; 543–546 K)[1]
Hazards
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H315, H319, H335
P261, P264, P264+265Script error: No such module "Preview warning".Category:GHS errors, P271, P280, P302+352, P304+340, P305+351+338, P319Script error: No such module "Preview warning".Category:GHS errors, P321, P332+317Script error: No such module "Preview warning".Category:GHS errors, P337+317Script error: No such module "Preview warning".Category:GHS errors, P362+364Script error: No such module "Preview warning".Category:GHS errors, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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4-Iodobenzoic acid, or p-iodobenzoic acid, is an isomer of iodobenzoic acid.[3]

Structure

4-iodobenzoic acid crystallization[4]

X-ray crystallography of 4-iodobenzoic acid has shown that it crystallizes in the solid state as hydrogen-bonded dimers which stack perpendicular to their aromatic rings. The iodine atoms of adjacent dimers are also oriented towards each other due to van der Waals forces.[4]

Preparation

4-Iodobenzoic acid may be prepared in the laboratory by the oxidation of p-iodotoluene with potassium permanganate.[5]

Reactions

The carboxylic acid functionality of 4-iodobenzoic acid undergoes Fischer–Speier esterification with methanol to form the ester methyl 4-iodobenzoate.[6]

References

  1. "4-Iodobenzoic acid". https://www.sigmaaldrich.com/US/en/product/aldrich/206547. 
  2. "4-Iodobenzoic acid" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/12085#section=Safety-and-Hazards. 
  3. "4-Iodobenzoic acid" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/4-Iodobenzoic-acid. 
  4. 4.0 4.1 Nygren, Cara L.; Wilson, Chick C.; Turner, John F. C. (2005). "On the Solid State Structure of 4-Iodobenzoic Acid". The Journal of Physical Chemistry A 109 (11): 2586–2593. doi:10.1021/jp047189b. PMID 16833563. 
  5. Varma, P. S.; Panickerp, P. B. (1928). "Influence of substitution on the oxidation of side chains in the benzene nucleus". Proc. 15th Indian Sci. Cong.. 
  6. Gadzikwa, Tendai; Zeng, Bi-Shun; Hupp, Joseph T.; Nguyen, SonBinh T. (2008). "Ligand-elaboration as a strategy for engendering structural diversity in porous metal–organic framework compounds". Chemical Communications (31): 3672–3674. doi:10.1039/B714160B. PMID 18665295.