肉桂酸,4-羟基肉桂酸(对香豆酸),3,4-二羟基肉桂酸(咖啡酸),4-羟基-5-甲氧基肉桂酸(阿魏酸)和3,5-二甲氧基钠盐的水溶液的电导率在288.15至318.15 K的温度范围(T)内以5 K的间隔测量了-4-羟基肉桂酸(芥子碱)酸。极限摩尔电导率Λ米Ø使用低浓度化学模型(lcCM)获得离子缔合常数(K A o)。确定了所研究阴离子的极限离子电导率和Eyring活化电荷转移焓。
Helical supramolecular host with aquapores anchoring alternate molecules of helical water chainsDedicated to Professor C. N. R. Rao on his 70th birthday.Electronic supplementary information (ESI) available: structural, spectral and magnetic data (Figs. S1-S5, Tables S1, S2). See http://www.rsc.org/suppdata/cc/b3/b316275c/
作者:Arindam Mukherjee、Manas K. Saha、Munirathinam Nethaji、Akhil R. Chakravarty
DOI:10.1039/b316275c
日期:——
Unprecedented 1D helical chains of hydrogen bonded water molecules, showing both handedness and anchored onto a helical supramolecular host formed from the self assembly of a dicopper(II) complex (1) containing pentadentate Schiff base (L) and p-hydroxycinnamate in 1·2H2O, propagate along the crystallographic 21-screw axis and the compound shows two endotherms due to loss of water molecules at 61.5 and 88.5 °C in the differential scanning calorimetry giving an overall change of enthalpy value of ∼36 kJ mol−1 per water molecule.
Synthesis and Characterisation of Rare Earth Complexes Supported by<i>para</i>-Substituted Cinnamate Ligands
作者:Glen B. Deacon、Maria Forsyth、Peter C. Junk、Stuart G. Leary、Winnie W. Lee
DOI:10.1002/zaac.200801379
日期:2009.5
The preparations and characterisations of a range of lanthanoid 4-(R)-substituted (4-Rcinn, R = OH, OMe, NO2, Cl), known to have good anticorrosion properties, are reported. The crystal structure of [Ce(4-OHcinn)3(MeOH)2(H2O)]·MeOH is a polymer, in which the cerium atoms are nonacoordinate, and adjacent cerium atoms are bridged by either two bridging bidentate or two bridging tridentate carboxylate
A Manganese(II) 4-Hydroxycinnamate Complex with the Tripod Ligand Tris(2-benzimidazolylmethyl)amine
作者:Huilu Wu、Wei Ying、Jingkun Yuana、Jian Dinga
DOI:10.1515/znb-2008-0103
日期:2008.1.1
A six-coordinate manganese (II) complex with the tripodligandtris(2-benzimidazolylmethyl) amine (ntb), with composition [Mn(ntb) (4-hydroxycinnamate)](4-hydroxycinnamate) · (DMF)0.5 · (H2O)3, was synthesized and characterized by elemental and thermal analyses, electrical conductivity, IR, and UV/vis spectral measurements. The crystal structure of the complex has been determined by the single-crystal
六配位锰 (II) 与三脚架配体三 (2-苯并咪唑基甲基) 胺 (ntb) 配合物,组成为 [Mn(ntb) (4-羟基肉桂酸酯)](4-羟基肉桂酸酯) · (DMF)0.5 · (H2O) )3,通过元素和热分析、电导率、红外和紫外/可见光谱测量合成和表征。该配合物的晶体结构已通过单晶 X 射线衍射确定。Mn (II) 阳离子通过四个 N 原子和两个 O 原子与一个 ntb 配体和一个 4-羟基肉桂酸酯配体键合,形成扭曲的八面体配位几何结构。络合物的循环伏安图表明存在准可逆的 Mn3+/Mn2+ 对。该复合物的 X 波段 EPR 光谱显示出 g = 2、A = 95 的六线锰超精细分裂模式,并证实该材料是高自旋 Mn(II)。