Talk:Iodoform

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Melting point

The melting point is given in the article as 119 degrees C and in the table as 118 degrees. One MSDS for iodoform that I viewed listed the melting point as 120 degrees, while another gave it as between 120 and 123 degrees. Does wikipedia have an accepted source that can be checked? Until someone can resolve this, I am leaving the temps. in the article unchanged. --71.227.190.111 22:55, 13 July 2006 (UTC)[reply]

There isn't any sole accepted source. The one I like, Merck Index, says "~120". In most cases measurements of boiling and melting points aren't precise enough to distinguish a one degree difference anyway, because thermometers can be difficult to calibrate and small differences in purity can lead to large differences in bp and mp. But we should at least be consistent within one article. --Ed (Edgar181) 23:16, 13 July 2006 (UTC). Thank you.[reply]

Diagram

I'm puzzled by the chemical diagram. It shows one carbon-iodine link as a straight line, one as a triangle, and one as a dotted line. The link to hydrogen is also a straight line. Carbon can make 4 links, as it does here, but shouldn't they all be similar? What are the triangle and dotted line trying to represent? Polymath69 22:30, 1 September 2006 (UTC)[reply]

Indeed carbon makes four "links", usually. The wedge and the dashed line by convention convey the three dimensionality of the molecule. Wedges project out from the screen, dashes go back behind the screen.--Smokefoot 23:33, 1 September 2006 (UTC)[reply]

I wish the "watchlist" would have notified me of your reply, which was completely instructional and very helpful. Thank you very much.Polymath69 04:12, 27 September 2006 (UTC)[reply]

The chemical 3 in the synthesis diagram should be HCOI3 not HCOCl3. —Preceding unsigned comment added by Psychopharmacology (talk • contribs) 21:46, 24 January 2009 (UTC)[reply]

removal of physical data

i have seen some physical data material lying around wikipedia chemistry articles, it appears the consensus is to not burden the pages with all this data, as the chemical tetrafluoroethane has a separate, unsourced, data page. so i removed it, as the information below is also unsourced, and not readable for your average reader:

Its enthalpy of sublimation is 69.9 kJ.mol^-1 at range of temperatures 35 - 92 °C.

Iodoform molecule parameters are: d(C-I) = 2.12 ± 0.04 Å, d(I-I) = 3.535 ± 0.01 Å and I-C-I = 113°. Dipole moment is 1 D. Its space group is P6₃ and lattice constants are a = 6.83 Å, c = 7.52 Å.

It has critical point at 584.85 °C, 5.63 MPa. Refractive index is 1.786 (D, 20 °C). -Shootbamboo (talk) 23:01, 29 November 2008 (UTC)[reply]

The flash point for Iodoform is listed on the side as 204 degrees C. The NIOSH reference says that iodoform has no flash point and is noncombustible. —Preceding unsigned comment added by 198.97.67.56 (talk) 21:42, 27 January 2010 (UTC)[reply]

Reference for Iodoform to Carbon Dioxide

Please correct the reference to that section. This is the correct:

http://pubs.acs.org/doi/abs/10.1021/ja01129a067

I don't do it because maybe one of you want to check it out first. --UAwiki (talk) 17:35, 17 July 2011 (UTC)[reply]

J.B. Dumas & formula for iodoform

I deleted the claim that in 1834, Jean-Baptiste Dumas determined the empirical formula for iodoform. The empirical formula that he obtained -- C₄H₂I₆ -- was incorrect. See page 123 of J.B. Dumas (1834) "Recherches de chemie organique," Annales de Chimie et de Physique, vol. 56, pages 113-154.

Cwkmail (talk) 00:44, 11 December 2011 (UTC)[reply]

Mechanism of alcohol oxidation

I seriously doubt that the mechanism of I₂ oxidation of secondary alcohols involves a ternary encounter, as depicted. In a bimolecular encounter, hydride would be released, and this is highly unlikely. Besides, no reference is provided. Much more likely in my mind is the α-deprotonation of an R-OI intermediate, formed by the alkoxide attacking the iodine of I₂ or, depending on pH, I-OH. Pgpotvin (talk) —Preceding undated comment added 21:57, 26 May 2017 (UTC)[reply]

External links modified

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