Category: 6443-90-9

Ikemoto, Isao published the artcileStructure of molecular compounds, Application In Synthesis of 6443-90-9, the publication is Kagaku no Ryoiki (1969), 23(5), 502-12, database is CAplus.

The Mulliken theory for charge transfer interaction between an electron acceptor and electron donor is reviewed and the overlap and orientation principle in relation to the structure of complexes is explained. Structures of the following charge transfer complexes are discussed: fo r π-σ complexes, donor (C6H6), acceptor (Br2, I2, or Cl2); for n-σ complexes, donor (1,4-dioxane, Me2CO, 1,4-dithiane, 1,4-diselenane, hexamethyl-enetetramine, trimethylamine, pyridine, or γ-picoline), acceptor (Br2, ICl, Cl2, I2); for π-π complexes, acceptor (trinitrobenzene, p-benzoquinone, chloranil, pyromellitic acid anhydrous, tetracyanobenzene, tetracyanoethylene, tetramethyluric acid, TCNQ), donor (anthracene, azulene, indole, skatole, p-iodoaniline, triaminobenzene, phenol, hydroquinone, resorcinol, p-chlorophenol, bromophenol, hexamethylbenzene, perylene, naphthalene, pyrene, N,N,N’,N’-tetramethylphenylenediamine, N,N-dimethylphenylenediamine, 1,2,4,5-tetramethylbenzene, ferrocenen, 3,4-benzopyrene, bis(8-hydroxyquinolinato)copper(II)). For the π-π complexes, the crystallographic data were tabulated.

Kagaku no Ryoiki published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Application In Synthesis of 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Klaeboe, Peter published the artcileThe Raman spectra of some iodine, bromine, and iodine monochloride charge-transfer coomplexes in solution, Related Products of iodides-buliding-blocks, the publication is Journal of the American Chemical Society (1967), 89(15), 3667-76, database is CAplus.

The Raman spectra of I2, Br2, and ICl have been studied in various solutions in the region below 400 cm.-1 by means of a Raman spectrophotometer equipped with a 50 mw. He-Ne laser. Quite satisfactory Raman spectra of these colored solutions were obtained, but for some Br and ICl complexes chem. reactions occurred. The observed Raman frequencies for the halogens or the interhalogen were considerably lower than the corresponding gas values, and the data have been interpreted on the basis of charge-transfer interaction. Some very strong donor-halogen interactions were observed, in which the stretching force constant of the halogens was reduced to approx. half the gas value. A Raman band at 163 cm.-1 in the pyridineiodine system was interpreted as the N-I stretching mode; otherwise no Raman bands were observed which can with certainty be assigned to the stretching of the donor-halogen charge-transfer bond. 36 references.

Journal of the American Chemical Society published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Related Products of iodides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Muathen, Hussni A. published the artcileMild and efficient iodination of aromatic compounds with pyridine-iodine monochloride complex (PylCl), Application In Synthesis of 6443-90-9, the publication is Journal of Chemical Research, Synopses (1994), 405, database is CAplus.

A wide range of aromatic compounds (e.g., C₆H₆) have been effectively iodinated with a pyridine-iodine monochloride complex (I). Condensed polycyclic iodides, which are not readily obtained via direct iodination, can be prepared indirectly via their corresponding organomercurials in 1 step. Some benzoid and nonbenzoid heterocycles (e.g., indole) are iodinated with I.

Journal of Chemical Research, Synopses published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Application In Synthesis of 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Roemming, Chr. published the artcileRefinement of the crystal structure of the charge transfer compound pyridine-iodomonochloride, HPLC of Formula: 6443-90-9, the publication is Acta Chemica Scandinavica (1947-1973) (1972), 26(4), 1555-60, database is CAplus.

The crystal structure of the charge-transfer complex of pyridine and iodomonochloride was refined by 3-dimensional x-ray methods using 884 observed reflections collected by counter methods. The geometry of the complex, as found in an earlier investigation, was verified; the accuracy in bond-length measurements is improved by a factor of 10 relative to the earlier results. The compound is planar with a linear N-I-Cl arrangement. The N-I and I-Cl bond lengths are 2.29 and 2.510 Å, resp.

Acta Chemica Scandinavica (1947-1973) published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, HPLC of Formula: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Safarov, Yu. B. published the artcileResistance of sheep enterotoxemia agent to various chemical substances, SDS of cas: 6443-90-9, the publication is Izv. Akad. Nauk Azerb. SSR, Ser. Biol. i Med. Nauk (1962), 101-5, database is CAplus.

Chem. substances (20) were tested for inhibition of growth of Clostridium perfringens types C and D. Spore suspensions containing a billion cells/cc. were used as test objects. Sterile cloth (0.5 cm. × 0.5 cm.) was soaked in the resp. spore suspension, dried, exposed to 3 cc. of solution and tested for viability. All solutions containing Cl demonstrated a bactericidal action, increasing with temperature The most effective are: acidified bleaching powder and monochloroiodine compounds Acids and alkali solutions are ineffective at low temperature, but strongly inhibitory at 60°. The bactericidal effect of the following substances is enhanced by a combined treatment at different temperatures: solutions of bleaching powder, acidified bleaching powder, monochloroiodines, pyridine iodochlorideHCl, and of OH with etherane 138 (a crude-oil product). The spores of C. Perfringens type D are more resistant than those of type C.

Izv. Akad. Nauk Azerb. SSR, Ser. Biol. i Med. Nauk published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, SDS of cas: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Sheka, I. A. published the artcileThe application of dielectric polarization for the determination of the composition of complex compounds in solutions, SDS of cas: 6443-90-9, the publication is Izvest. Sektora Platiny i Drug, Blagorod. Metal., Akad. Nauk S.S.S.R., Inst. Obshcheǐ i Neorg. Khim. (1951), 189-202, database is CAplus.

It has been known for some time that the dielec. polarization P for complexes is more than the simple sum of the compounding mols. By comparing numerous reliable data from the literature, it was noted that not only ΔP will accept a rather large value for the case of complex formation, but Δε also, which is understandable, as ε (dielec. constant) appears in the formula for P. By plotting curves ΔP vs. composition and Δε vs. composition, a maximum in such curves will indicate the formation of a complex. For allyl isothiocyanate and piperidine in benzene these 2 maximum coincided with those for viscosity, deviation of the sp. volume, heat of mixing, n, and the temperature coefficient of the viscosity. For pyridine and ICl in CHCl₃ the ΔP and Δε maximum coincided with one of the m.p. maximum in the m.p. diagram of pyridine ICl. Thus the plotting of the ΔP-composition and Δε-composition diagrams may serve to replace other very tedious determinations of other physicochem. values which have been used heretofore to find out the presence or absence of complexes. The maximum in these curves will not occur if merely van der Waals forces are acting. If more than one complex is formed, only one will give rise to a maximum; the other will be indicated by a break in the curve. Thus for the case AlBr₃-dioxane the break is found for (AlBr₃)₂.C₄H₈O₂, whereas the maximum lies at AlBr₃.C₄H₈O₂. The higher the maximum in these curves, the more stable the complexes.

Izvest. Sektora Platiny i Drug, Blagorod. Metal., Akad. Nauk S.S.S.R., Inst. Obshcheǐ i Neorg. Khim. published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C20H12N2O2, SDS of cas: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Watari, Fumio published the artcileFar infrared spectra of pyridine-iodine monochloride and pyridine-iodine monobromide complexes, Application of Pyridine Iodochloride complex, the publication is Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (1967), 23(6), 1917-21, database is CAplus.

The far ir spectra of pyridine-iodine monochloride (I) and pyridine-iodine monobromide (II) complexes have been measured in the region from 500 to 80 cm.-1 in paraffin mulls. Three absorption bands were observed and assigned as I: ν16b (pyridine) = 425, νICl = 265, νNI = 170 cm.-1; II, ν16b(pyridine) = 421, νIBr = 200, and νNI = 160 cm.-1 Under assumptions of a linear triat. model and fNI,ICl = fNI,IBr, the force constants were calculated: fICl = 1.18 (estimated by the Badger rule), fIBr = 1.05, fNI(Cl) = 0.91, fNI(Br) = 0.85, and fNI,ICl = fNI,IBr = 0.22 (millidyne)/A.). The force constant of the interhalogen vibration, fIX, is one half of that of the free mol. The interaction constant is larger than that of a usual mol., which will be characteristic of the mol. complex. 16 references.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C8H14O4, Application of Pyridine Iodochloride complex.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hassel, Odd published the artcileWeak intermolecular bonds in solids, Name: Pyridine Iodochloride complex, the publication is Dansk Tidsskrift for Farmaci (1962), 41-54, database is CAplus and MEDLINE.

A brief review of studies on charge-transfer bonds in complex compounds between halides (electron acceptors) and mols. containing O, N, and S, or the π-electrons of aromatic hydrocarbons, as electron donors. Electron-d. projections are given for pyridine-2I₂, pyridine-ICl, 2 acetonitrile-Br₂, CHI₃-3-quinoline, CHI₃-3S₈; the complexes 1,4-dioxane-halogen, acetone-Br₂ (1:1), hexamethylenetetramine-2Br₂, halogen-benzene, SbI₃-3S₈, oxalyl chloride (or bromide)-1,4-dioxane, and CHI₃-dithiane are discussed. Charge-transfer bonds were also found in crystals of cyanuric halides and oxalyl bromide, where an electron donor and acceptor are present.

Dansk Tidsskrift for Farmaci published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Name: Pyridine Iodochloride complex.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hassel, O. published the artcileStructures of electron-transfer and related molecular complexes in the solid state, SDS of cas: 6443-90-9, the publication is Molecular Physics (1958), 241-6, database is CAplus.

Results obtained in recent years from x-ray investigations of solid addition compounds thought to be formed by electron transfer between mols. containing closed shells are discussed. (1) Addition compounds of ethers (or thioethers) and halogen (X): The arrangement O-X-X (or with S) as well as O-X-X-O (dioxane) is linear. In cases of combinations of 2 different halogens the stronger bond is linked to the donor atom, e.g. RO-I-Cl. This is corroborated by the altered bond distances. (2) Pyridine and ICl (1:1): The whole complex is definitely planar, the bond distances being 2.30 and 2.54 A. for N-I and I-Cl bonds, resp. (3) Hexamethylenetetramine and Br (1:2): Both N-Br-Br are linear, one N-Br and the three C-N bonds forming a nearly regular tetrahedron. Exactly the same configuration is established for Me₃N-XY. For X,Y = I the distances for I-I and N-I, resp., 2.85 and 2.27 A. are obtained; if X = I, Y = Cl, the values are 2.53 and 2.30 A. for I-Cl and N-I, resp. These results invalidate Hantsch’s concept of solid addition compounds of the type (R₃NX)⁺Y^–. The assumption that the direct reaction products obtained from amines and halogens may without risk be recrystallized from nonaqueous solvents is also fallacious. As regards the structure of charge-transfer complexes, the space group (C 2/m) is determined as the most likely one for C₆H₆.Br₂. The crystal is built of chains consisting of alternating C₆H₆ and Br₂ mols. with the Br atoms symmetrically located about the common major axis of 2 neighboring C₆H₆ rings. The Br-Br distance differs little from the one in the isolated mol. The distance Br → center of nearest ring amounts to 3.36 A. Crystal structures of addition compounds between ethers and mols. containing active H are also being studied. There exists a bond between O of Et₂O and C of CHCl₂Br, the O-H-C separation being 3.1 A. It is certain that the 1:1 compound of dioxane and H₂SO₄ is built of chains, alternating in the components, with both H atoms of the acid taking part in H-bonding with the O atoms of the ether. The O-H-O bond appears to be of normal length. The surprisingly short N-X distances indicate a bond not essentially weaker than ordinary covalent bonds, whereas the lengthening of the adjacent X-X distances in comparison to X₂ purports weakening. As both X atoms are linked to the O atoms of dioxane in the crystalline addition compounds, there is strong indication that the second X in 1:1 complexes, evidently present in liquid mixtures, is essentially not altered by bond formation between O and the first X. It is, therefore, suggested that the X, which is directly bound to the donor, forms a 10-electron system, whereas the second X retains its original octet. In this case a linear arrangement would be expected (viz. I₃^–), as is found. In regard to the probable structure of addition complexes in liquid mixtures it is believed that the amine-X₂ and ether-X₂ complexes exhibit the linear arrangement. The keto-halogen structures (1:1) in the solid state are predicted to be chains, each keto O being linked to 2 independent X atoms; in this case an angle of about 110° is to be expected between 2 linear O-X-X-O arrangements meeting in the keto O.

Molecular Physics published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, SDS of cas: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Brownson, G. W. published the artcileFar-infrared intensity and normal coordinate studies on pyridine-halogen complexes, SDS of cas: 6443-90-9, the publication is Journal of Molecular Structure (1971), 10(1), 147-53, database is CAplus.

Absolute integrated intensity data were determined for the 2 low frequency bands due to ν(D-I) and ν(I-X) in pyridine-IX (X=I, Cl, Br) complexes. Along with the normal coordinates, calculated by using a linear triat. model, these data were used to calculate dipole derivatives * vecμ/* j values. Pyridine-d5-IBr spectra were used to estimate possible values of the interaction force constant k13. The dipole moment change * vecμ/* D-I calculated for the pyridine-I2 complex by using a simple model is considerably lower than that observed, implying that charge-transfer effects contribute significantly to the band intensities.

Journal of Molecular Structure published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, SDS of cas: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com