magnetic susceptibility (χMT values) of tetrachloromanganate (II) anions-based salts is higher than that of tetrachlorocobaltate (II) anions-based salts. These dicationic salts exhibit weak antiferromagnetic interactions and have higher magnetic susceptibility than that of the previously reported tetrachloromanganate (II) and tetrachlorocobaltate(II) salts with monocationic counterion.
and binding modes. 3- and 4-Substituted guests (12+, 32+, 42+, 62+, 72+) form [2]pseudorotaxane geometries with CP5A host, giving very large association constants (>105 M–1), while 2,6-dimethyl-substituted 52+ forms external complex with relatively small Ka values [(2.4 ± 0.3) × 103 M–1] because the 2,6-dimethylpyridinium unit is too bulky to thread the host cavity. Both of the binding geometries mentioned
Mono- and Binuclear Chloride and Bromide Complexes of Bi(III) with Double-Charged Cations Based on Pyridine: Syntheses and Crystal Structures
作者:I. D. Gorokh、S. A. Adonin、D. G. Samsonenko、M. N. Sokolov、V. P. Fedin
DOI:10.1134/s1070328418080031
日期:2018.8
bis(pyridyl)alkane cations afford mono- and binuclear halide complexes (Py-(CH2)3-Py)3[Bi2Br9]2 (I), (H3O)(Py-(CH2)4-Py)[BiCl6] ⋅ 3H2O (II), and (H2Bpp)2[Bi2Br10] ⋅ 2H2O (Bpp is 1,3-bis(4-pyridyl)propane) (III). The structures of the synthesized compounds are determined by X-ray diffraction analysis (СIF files CCDC no. 1583338–1583340, respectively).
Halobismuthates with bis(pyridinium)alkane cations: Correlations in crystal structures and optical properties
作者:Sergey A. Adonin、Igor D. Gorokh、Denis G. Samsonenko、Olga V. Antonova、Ilya V. Korolkov、Maxim N. Sokolov、Vladimir P. Fedin
DOI:10.1016/j.ica.2017.08.058
日期:2018.1
Abstract A series of four chloro- and bromobismuthates with bis(pyridinium)alkane cations (Py(CH2)nPy)2+(Cn) and (4-PyH)(CH2)n(4-PyH)2+(H2Cn) were synthesized and characterized. Analysis of their crystal structures, as well as previously reported data, results in establishment of correlations between the type of halobismuthate anion and the nature of cation. Luminescent properties of obtained compounds
Ionic-Liquid-Functionalized Polyoxometalates for Heterogeneously Catalyzing the Aerobic Oxidation of Benzene to Phenol: Raising Efficacy through Specific Design
作者:Zhouyang Long、Yu Zhou、Weilin Ge、Guojian Chen、Jingyan Xie、Qian Wang、Jun Wang
DOI:10.1002/cplu.201402186
日期:2014.11
organic–inorganic hybrid catalyst 1,1′‐(butane‐1,4‐diyl)‐bis(3‐cyanopyridine)–PMoV2 was prepared for heterogeneous hydroxylation of benzene to phenol with O2 and ascorbic acid as the oxidant and reductant, respectively. The hybrid catalyst not only gave the high phenol yield of 13.0 % under the optimized reaction conditions, but also exhibited high potential for reusability. The catalyst and its analogue
通过在水溶液中沉淀,将基于腈系吡啶鎓的离子液体指示剂与Keggin H 5 PMo 10 V 2 O 40(PMoV 2)的多金属氧酸盐阴离子结合,形成一种有机-无机杂化催化剂1,1'-(丁烷-1制备了4-(2-二基)-双(3-氰基吡啶)-PMoV 2,用于用O 2将苯异质羟基化为苯酚和抗坏血酸分别作为氧化剂和还原剂。该杂化催化剂不仅在优化的反应条件下苯酚收率高达13.0%,而且具有很高的可重复使用性。通过元素分析,傅里叶变换红外光谱,电子自旋共振光谱,X射线衍射,扫描电子显微镜和氮吸附-脱附分析对催化剂及其类似物样品进行表征。根据表征和密度泛函理论的计算结果,讨论了结构-活性关系。