Interactions iodine

The compounds [Au3Ira(MeN=COMe)3] ( = 2, 4, 6) obtained by stepwise addition of iodine to the cyclic tetranuclear gold(I) complexes [Au3(MeN=COMe)3] have been revisited. The structure of [Au3I6(MeN=COMe)3] (338) consists of columns of the molecular units united by weak iodine- iodine interactions which range in length from 3.636(2) A to 3.716(2) A. The solid-state molecular packing of the di-iodo and tetra-iodo complexes reveal no unusual features.1971... 

Tewe, 0.0. and J.H. Maner. 1985. Cyanide, protein and iodine interaction in the performance and metabolism of rats. Jour Environ. Pathol. Toxicol. Oncol. 6 69-77. 

Tewe 00, Maner JH. 1980. Cyanide, protein and iodine interactions in the performance, metabolism and pathology of pigs. Res Vet Sci 29 271-276. 

Abstract This presentation is a brief review on the resnlts of our work on iodine interaction with thioamides, selenoamides and amides. The thioamides, benzothia-zole-2-thione (BZT) (1), 6-n-propyl-2-thiouracil (PTU) (2), 5-chloro-2-mercap-tobenzothiazole (CMBZT) (3), N-methyl-benzothiazole-2-thione (NMBZT) (4), benzimidazole-2-thione (BZIM) (5), thiazolidine-2-thione (TZD) (6), 2-mercapto-pyridine (PYSH) (7), 2-mercapto-nicotinic acid (MNA) (8), 2-mercapto-benzoic acid (MBA) (9) and 2-mercapto-pyrimidine (PMT) (10) react with producing three type of complexes of formulae [(HL)IJ(l2) (HL= thioamide and n= 0, 1), [(HL) [I3 ] and [(HL-L)]+[l3 ]. The interaction of seleno-amides, derived from, 6-n-propyl-2-thiouracil (RSelJ) (R= Me- (11), Et- (12), n-Pr- (13) and i-Pr- (14)) with I, have also been studied and produced the complexes [(RSeU)IJ of spoke structure. These complexes are stable in non-polar solvents, but they decompose in polar solvents, producing dimeric diselenide compounds or undertake deselenation. 

Keywords Anti-thyroid drags, amides, iodine interaction, selenoamides, thioamides... 

Iodine interacts with many organic compounds to form pi complexes that are colored. This method of detection is especially useful for lipids containing double bonds. A lipid with several double bonds will give a darker spot with iodine. The darker spots may also be due to a higher concentration of lipid. 

Q. Chu et al., Fluorine-containing donor-acceptor complex Infinite chain formed by oxygen-iodine interaction. J. Am. Chem. Soc. 123, 11069-11070 (2001)... 

Ramachandran, L. K. Protein-Iodine Interaction/ Chem. Revs., 56,1065 (1956). 

The amylose-iodine interaction has a dipolar nature, as deduced from a distinct difference between the molecular coefficient of iodine in starch and in nonpolar solvents.123 The additional stabilization may result from the formation of resonating polyiodine chains at high dipolar interactions. The composition of the total energy of stabilization is shown5 in Table VI. 

The charge-transfer complex of 1,4,7-trithiacyclononane 10 and I2 has been prepared by slow evaporation of solutions containing I2 and thioether macrocycle in CH2CI2. The structure of the complex showed two independent macrocycles in the asymmetric unit which are linked by a diiodine bridge. Asymmetric units are linked by iodine-iodine and sulfur-iodine interactions to form an extended array of linked macrocycles. The formation enthalpy ( AH = 35.0 kj mob1) and formation constant (K= 169 dm3 mol-1) of 1 1 adduct have been determined by electronic spectroscopy and compared to other polythia macrocycles of different sizes <1997JCD1337>. 

Iron and iodine interact in the presence of water, evolving heat, ferrous iodide passing into solution. The reaction appears to take place in stages involving the formation of ferric iodide, which decomposes into ferric oxide and hydrogen iodide, the last-named attacking the free iron with the formation of ferrous iodide.2... 

The dodecaiodide dianion in [Ag2([15]aneS5)2](li2) is described as a charge-transfer complex [(l )2-(l2)5] bound to the cation by Ag-I bonds with weak 1- -S interactions combining to build up an extended three-dimensional, spiral superstructure. In marked contrast, the same anion in bis[potassium(dibenzo-18-crown-6)] dodecaiodide nearly a discrete entity (I2 I3 1213 12). In [Cu(Dafone)3](Ii2), iodine-iodine interactions assemble novel, planar, [I ] anions into a network around the strained tris-chelate complex ofCu(II). ... 

Bipyridine and 1,4-diiodobenzene crystallize in a 1 1 ratio forming 1-D chains through nitrogen-iodine interactions with N-I distances of 3.023 A [51]. Similarly, the crystallization of 4,4 -bipyridine with 1,4-diiodotetafluoroben-zene produces a 1-D chain with N I distances of 2.851 A, which is considerably... 

In solution, thyroxin exists as two distinct cisoid and transoid isomers in a roughly 50 50 ratio (Fig. 13.2) which results from oxygen doublet-iodine interactions as well as iodine-iodine repulsion. 

In this paper, we briefly review the results of our work on the iodine interaction with the thioamides benzothiazole-2-thione (BZT) (1), 6-n-propyl-2-thiouracil (PTU) (2), 5-chloro-2-mercaptobenzothiazole (CMBZT) (3), N-methyl-benzothia-zole-2-thione (NMBZT) (4), benzimidazole-2-thione (BZIM) (5), thiazohdine-2-thione (TZD) (6), 2-mercapto-pyridine (PYSH) (7), 2-mercapto-nicotinic acid (MNA) (8),... 

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