Tag: M.W=200-250

Yarwood, Jack published the artcileSpectroscopic studies on intermolecular complexes. II. Far infrared intensities and NMR spectra of pyridine bases with iodine monochloride, Recommanded Product: Pyridine Iodochloride complex, the publication is Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (1970), 26(11), 2099-12, database is CAplus.

Low-frequency IR and NMR spectra for complexes of ICl with a series of substituted pyridines have been obtained in an attempt to study the factors which lead to a variation in donor ability when Me group substitution is made at different positions in the ring. The presence of even one α-Me group causes a significant decrease in the ν(N-I) (intermol.) band frequency and intensity (and in the kDI force constant) relative to those found in the absence of α-Me groups. On the other hand the ν(I-Cl) band intensity varies very little on going from one base to another while the NMR spectra show that electronic rearrangement within the base mols. can be correlated, at least to some extent, with their pKa values.

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 C6H20Cl2N4, Recommanded Product: Pyridine Iodochloride complex.

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

Yarwood, Jack published the artcileVibrational band shape and intensity studies on molecular motions and interactions in condensed phases. Part 3. Effects of complexation on the molecular dynamics of pyridine, Quality Control of 6443-90-9, the publication is Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics (1976), 72(5), 967-74, database is CAplus.

The changes in ir band width of pyridine on complexation with ICl are consistent with a mechanism involving a large increase in the total correlation time, due to removal of a large part of the correlation function GR(t), and a subsequent broadening of the band due to increased vibrational relaxation. This relaxation is partly controlled by dipole-dipole interaction and partly by transition dipole-transition dipole interaction. The vibrational relaxation mechanism operates for free pyridine and on complexation produces a pattern of band widths dependent on the intensities, normal coordinates, and symmetry properties of the normal modes.

Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical 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 C11H10ClNO, Quality Control of 6443-90-9.

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

Yarwood, John published the artcileInfrared studies on charge-transfer complexes. I. Comparison of the vibrational intensities of pyridine with those of pyridine-iodine chloride, Related Products of iodides-buliding-blocks, the publication is Transactions of the Faraday Society (1969), 65(4), 934-44, database is CAplus.

Integrated ir intensity measurements are reported for the vibrational fundamental bands of pyridine and of the pyridine-ICl charge-transfer complex in CHCl3 and benzene solutions An attempt has been made to interpret the large intensity changes which occur on complexation in terms of the charge-transfer model proposed by Mulliken. Intensity perturbations arise in addition to those expected for the “weak” complex approximation and several interesting anomalies in the intensity data are discussed.

Transactions of the Faraday 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 C11H10ClNO, Related Products of iodides-buliding-blocks.

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

Zsolnai, Tibor published the artcileAntimicrobial action of potential thiol reagents, Category: iodides-buliding-blocks, the publication is Zentralblatt fuer Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung 1: Medizinisch-Hygienische Bakteriologie, Virusforschung und Parasitologie, Originale (1970), 214(4), 507-17, database is CAplus.

The bacteriostatic, fungistatic, trichomonastatic, amebicidal and acaricidal activity of 58 compounds which react with SH groups, was studied. Some compounds were active in vitro, but none in vivo. In vitro cysteine (I), thioglycolate, serum, and peptone inhibited the bacteriostatic activity, suggesting a mechanism of action which involves SH-containing enzymes. XRCHCO2Et (R = H or alkyl, X = I or Br) showed a strong antimicrobial activity which diminished for R = alkyl. Of several α-bromocarbonyl compounds and α-bromonitriles, the highest activity was shown by ω-bromoacetophenone (II). Most β-nitrostyrene derivatives were very active, especially those with an electrophilic substituent in para position. Very strong bacteriostatic and fungistatic activity was shown by α-bromostyrene and α,β-dibromostyrene (III). An especially marked activity was shown by tetraiodoethylene. A broad spectrum of antibacterial activity was shown by 4-nitroquinoline 1-oxide. High activity was shown by RHgX (R = Et, 4-HO2CC6H4 and X = Cl, 2-NaO2CC6H4S) and by p-RC6H4As(SCH2CO2H)2 (R = Cl or NH2).

Zentralblatt fuer Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung 1: Medizinisch-Hygienische Bakteriologie, Virusforschung und Parasitologie, Originale published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C19H36BNO2Si, Category: iodides-buliding-blocks.

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

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