ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of Carbon Disulfide with Azide Ion1Eugene Lieber, Edwin Oftedahl, and C. N. R. RaoCite this: J. Org. Chem. 1963, 28, 1, 194–199Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963https://pubs.acs.org/doi/10.1021/jo01036a046https://doi.org/10.1021/jo01036a046research-articleACS PublicationsRequest reuse permissionsArticle Views490Altmetric-Citations42LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
A statistical evaluation of the empirical linear correlations of infrared group frequencies and band intensities in aliphatic and benzene derivatives with substituent constants has been carried out. The correlations of frequencies with substituent constants generally give low standard deviations and acceptable correlation coefficients, and may thus be employed for the estimation of substituent constants. The correlations of band intensities with substituent constants show an interesting trend of the sign and magnitude of the slopes (ρ values) with the electrical property of the bond or group involved in the vibration. The ρ value decreases with the increasing electron-withdrawing power of the group.
Die Nahordnung in nichtkristallinen und kristallinen Silicaten kann mit der 29 Si‐Magic‐Angle‐Spinning(MAS0‐NMR‐Spektroskopie untersucht werden. Je nach Vernetzungsgrad des Silicats, den SiOSi‐Bindungswinkeln und den Atomabständen treten unterschiedliche 29 Si‐chemische Verschiebungen auf. Auf diese Weise läßt sich die Verteilung der SiOSi‐Winkel in Gläsern erhalten, deren Kristallinität zwischen 0 und 100% liegt.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Cu 2p core-level photoemission studies of ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Sr}}_{\mathit{x}}$${\mathrm{CuO}}_{4}$, ${\mathrm{BiPbSr}}_{2}$${\mathrm{Y}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ca}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Cu}}_{2}$${\mathrm{O}}_{8}$, and other cuprates show that the relative intensity of the satellite varies with the composition in a direction opposite to that of the hole concentration, ${\mathit{n}}_{\mathit{h}}$. The ${\mathit{I}}_{\mathit{S}}$/${\mathit{I}}_{\mathit{M}}$-${\mathit{n}}_{\mathit{h}}$ relations in the different cuprate series can be understood in terms of the \ensuremath{\Delta}/${\mathit{t}}_{\mathit{p}\mathit{d}}$ ratio, where \ensuremath{\Delta} is the charge-transfer excitation energy and ${\mathit{t}}_{\mathit{p}\mathit{d}}$ is the hybridization strength between the Cu 3d and O 2p orbitals. Interestingly, the ${\mathit{I}}_{\mathit{S}}$/${\mathit{I}}_{\mathit{M}}$ ratio increases with the \ensuremath{\Delta}/${\mathit{t}}_{\mathit{p}\mathit{d}}$ ratio in the cuprates. At a given value of ${\mathit{n}}_{\mathit{h}}$, e.g., around the value corresponding to maximum ${\mathit{T}}_{\mathit{c}}$, ${\mathit{I}}_{\mathit{S}}$/${\mathit{I}}_{\mathit{M}}$ increases in the same direction as ${\mathit{T}}_{\mathit{c}}$ among the different series of cuprates, suggesting thereby that ${\mathit{T}}_{\mathit{c}}$ itself may be determined by \ensuremath{\Delta}/${\mathit{t}}_{\mathit{p}\mathit{d}}$.
Reaction of WO3, MoO3 and V2O5 with alcohols or glycols is shown to yield hydrogen bronzes of the oxides. Cubic and tetragonal HXWO3, H0.47MoO3 as well as H0.4V2O5 have been prepared by this method.
Infrared and Raman spectra of N2H6SO4 have been investigated through the phase transitions at 230 K (III-II) and 483 K (II-I) and assignments made to the various vibrational modes. The assignments have been confirmed by studies of the deuterated compound. The internal modes of both N2H6 2+ and SO4 2− ions show marked changes across the phase transitions. The torsional mode of N2H6 2+ with a fundamental frequency of 517 cm−1 in the room-temperature phase II, disappears in the high-temperature phase, I, accompanied by the appearance of the v q bending mode at 845 cm−1. The torsional barrier is estimated to be ≈32 kJ mol−1. The hydrazonium ion in the high-temperature phase is comparable to ethane. The SO4 2− ion bands also show marked changes across the phase transitions, the v 1 and v 2 bands disappearing in the high-temperature phase. In the low-temperature phase, III, both molecular ions are more distorted than in the room-temperature phase.
Relating properties of substances to their structures has been a major objective of modern chemistry and this also happens to be a prime concern of solid state chemists. Some of the aspects of importance in solid state chemistry are electronic, magnetic, superconducting, dielectric and optical properties. We shall briefly discuss these properties and present highlights in the solid state chemistry of some interesting classes of materials. An important class of materials is that of ferroics, which possess several orientation states that can be switched from one to another by the application of an appropriate force; ferroelectric materials form a subgroup of this class of materials. Other classes of materials discussed are amorphous solids, mixed-valence compounds, low-dimensional solids and liquid crystals which are of considerable importance. We have also devoted attention to different types of metal-nonmetal transitions and have briefly examined the question, ‘what makes a metal?’. While a detailed discussion of the theory of electronic structure would be outside the scope of the book, we have presented the necessary background material at an elementary level and discussed some of the typical results obtained from empirical theory as well as electron spectroscopy.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Fullerenes, containing five- and six-membered carbon rings, of which C60 and C70 are the prominent members, exhibit phase transitions associated with orientational ordering. When C60 is suitably doped with electrons, it shows novel superconducting and magnetic properties. We review these and other properties of fullerenes in bulk or in film form along with the preparative and structural aspects. Carbon nanotubes and onions (hyperfullerenes) are the other forms of carbon whose material properties have aroused considerable interest. Besides discussing these new forms of carbon, we briefly introduce other possible forms, such as those involving five-, six- and seven-membered rings and hybrids between diamond and graphite.
