A complete experimental description of the vibrational Franck-Condon barrier to the one-electron reduction of 4-cyano-N-methylpyridinium cation (NC-py-CH3+) has been obtained. Because of the chemical irreversibility of the electron transfer, the reaction is not readily amenable to study by conventional structural methods. The approach successfully employed here, however, was a time-dependent analysis of near-resonant Raman scattering where resonance was achieved by pairing the cation to iodide anion; the pairing gives rise to a weak (epsilon = 565 M-1 cm-1) outer-sphere charge-transfer band centered at 428 nm in acetonitrile as solvent. The time-dependent analysis of scattering yields vibrational frequencies, coordinate displacements, and single-mode barrier contributions for each of 13 modes involved in outer-sphere electron transfer. Depolarization measurements, excitation profiles, and scattering studies with the nonchromophoric [NC-py-CH3+,Cl-] ion pair confirm that the vibrational structural data pertain directly to the outer-sphere charge-transfer reaction rather than to higher lying electronic transitions.
1-substituted indolizines with activity against Mycobacterium tuberculosis have been synthesized. The most active compounds carry an hydroxyphenylmethyl- or hydroxyalkyl substituent in the indolizine 1-position. The alkyl chain should be moderately long (C-5 or C-6). Aryl groups in the 2- and 3-position of the indolizine are also required. Removal of the 3-substituent resulted in significant loss of
[EN] TRIAZINIUM CATION FORMS AND METHODS OF MAKING THEREOF<br/>[FR] FORMES CATIONIQUES DE TRIAZINIUM ET LEURS PROCÉDÉS DE FABRICATION
申请人:LOYOLA UNIV NEW ORLEANS
公开号:WO2018183749A1
公开(公告)日:2018-10-04
The present disclosure provides, among other things, compounds and crystalline forms of compounds thereof and methods of making and using such compounds and crystalline forms of compounds. Disclosed compounds and crystalline forms are useful in electronic materials, semiconductor materials, and optoelectronic materials and devices incorporating these materials and which exhibit desirable characteristics for the same.
Cyanopyridinium-Verbindungen als Bleichaktivatoren
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0806473A2
公开(公告)日:1997-11-12
Die Verwendung von Verbindungen der allgemeinen Formel
wird beansprucht, worin die Reste R1 bis R4 sowie Y und Z organische Substituenten und X ein geeignetes Anion bedeuten. Die erfindungsgemäßen Verbindungen werden als Bleichaktivatoren in bleichenden Wasch- und Reinigungsmittel eingesetzt.
要求使用通式如下的化合物
其中 R1 至 R4 及 Y 和 Z 为有机取代基,X 为合适的阴离子。根据本发明的化合物可用作漂白洗涤剂和清洁剂中的漂白活化剂。
Triazinium cation forms and methods of making thereof
申请人:Loyola University New Orleans
公开号:US10961224B2
公开(公告)日:2021-03-30
The present disclosure provides, among other things, compounds and crystalline forms of compounds thereof and methods of making and using such compounds and crystalline forms of compounds. Disclosed compounds and crystalline forms are useful in electronic materials, semiconductor materials, and optoelectronic materials and devices incorporating these materials and which exhibit desirable characteristics for the same.