Nuclear magnetic resonance studies of complexes of aluminium(<scp>III</scp>), gallium(<scp>III</scp>), and indium(<scp>III</scp>) with disulphonated 2,2′-dihydroxyazobenzene ligands in aqueous solution
作者:Dennis F. Evans、Nobuhiko Iki
DOI:10.1039/dt9900003773
日期:——
metal ions between the two nitrogen atoms. For the 1 : 1 and 1 : 2 aluminium(III) and the 1 : 2 gallium(III) complexes of asymmetric ligands, the expected isomers have been observed, and the equilibrium isomer ratios are reported. Assignments based on 1H n.m.r. spectra have been confirmed by the 15N n.m.r. spectrum of a 1 : 2 gallium(III) complex with a ligand enriched in 15N. The isomer ratios can be
报道了在D 2 O溶液中Al III,Ga III和In III与各种5,5'-磺化的2,2'-二羟基偶氮苯的络合物的质子nmr光谱。配体交换在nmr时间尺度上很慢,并且已对1:1和1:2复合物进行了表征。Al III和Ga III的配合物的光谱表明,金属离子仅与偶氮基团的氮之一结合。相反,研究的两个对称配体的1:2铟(III)配合物是通量的,并且ΔG ‡的值给出了在两个氮原子之间“翻转”金属离子的过程。对于不对称配体的1:1和1:2铝(III)和1:2镓(III)配合物,已观察到预期的异构体,并报道了平衡异构体比率。基于1 H nmr光谱的分配已由具有富集15 N的配体的1:2镓(III)配合物的15 N nmr光谱证实。通过考虑4和3中的取代基的影响,可以大大合理化异构体比率。 4'位置在偶氮基团中的远端氮原子的电子密度上。pD的变化对异构体比率和1的影响还已经研究了具有可电离的4'-
POLYTHIOPHENE, WATER-SOLUBLE ELECTRICALLY CONDUCTIVE POLYMER USING IT, AND METHOD FOR PRODUCING IT
申请人:TOSOH CORPORATION
公开号:US20150337061A1
公开(公告)日:2015-11-26
To provide a water-soluble polythiophene used as an electrically conductive material, and its production method.
A polythiophene comprising at least one type of structural units selected from the group consisting of structural units represented by the formula (1), structural units represented by the formula (2), structural units represented by the formula (3), structural units represented by the formula (4), structural units represented by the formula (5) and structural units represented by the formula (6). The polythiophene is obtained by polymerizing at least one thiophene compound selected from the group consisting of a thiophene compound represented by the formula (15), a thiophene compound represented by the formula (16) and a thiophene compound represented by the formula (17) in water or an alcohol solvent in the presence of an oxidizing agent.
in-house research programs. In this article, we present the discovery of clinical candidate 26a. Starting from hits plagued with poor solubility or genotoxicity, 26a was identified through thorough multiparameter optimisation. Showing robust in vivo activity in an oxazolone-mediated inflammation model, the compound was selected for development. Following a polymorph screen, the hydrochloride salt was