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1)  squaric acid
方酸
1.
Synthesis and reaction of 1,2 substituted squaric acid derivatives;
方酸1,2-取代衍生物的合成及反应
2.
The 2D network coordination polymer of CdⅡ with 1,10-phen and squaric acid, [Cd(C4O4)(C12N2H8)(H2O)]n, has been synthesized by the hydrothermal method through self-assembling, and it′s molecular structure has been characterized by X-ray single-crystal structure analysis.
本文采用邻菲罗啉和方酸为配体,在水热条件下通过自组装合成了具有二维网状结构的配位聚合物[Cd(C4O4)(C12N2H8)(H2O)]n,并应用X-光衍射技术测定了其单晶结构。
2)  squaraine
方酸
1.
DFT Studies on Electronic Spectra and Nonlinear Optical Properties of Symmetric Squaraine Derivatives Linked with Borazine;
六元环硼氮烷对称取代方酸的电子光谱和非线性光学性质的DFT研究
2.
The geometry structures of squaraine derivatives substituted by benzo five-membered ring moi-ety were optimized and electronic structures were calculated with HF/6-31G* method.
利用从头算HF/6-31G*方法对用苯并五元环取代的方酸衍生物体系SQ1~SQ15进行几何构型优化和电子结构计算。
3)  deacidfieation method
脱酸方法
4)  squaraines
方酸菁
1.
And novel polyfluorenes containing squaraines unit were prepared by method of Suzuki coupling reaction.
用微波法快速地合成了单体方酸菁染料,并首次通过Suzuki偶联将其键合到聚芴的主链上,目标共聚物通过红外和核磁对其进行了表征。
2.
The optical properties of squaraines are sensitive to the surrounding medium which makes them ideal candidates for designing a variety of chemosensors.
方酸菁与某些化合物作用后本身颜色发生明显变化,是构筑化学传感器的理想材料。
5)  nitrogen squaric acid
氮方酸
1.
The structure of nitrogen squaric acid is optimized by the methods of DFT/B3LYP/6-311+G(d,p)、MP2/ 6-311+G(d,p) and MP2(full)/6-311+G(d,p).
采用DFT/B3LYP/6-311+G(d,p)、MP2/6-311+G(d,p)和MP2(full)/6-311+G(d,p)优化了氮方酸的几何构型,计算发现DFT/B3LYP/6-311+G(d,p)方法优化的几何构型较为合理。
6)  squaric acid derivatives
取代方酸
1.
Ab initio study of polarizabilities and the first hyperpolarizabilities of 1,3-D,A substitued squaric acid derivatives;
1,3-D,A取代方酸极化率和一阶超极化率的从头算研究
补充资料:方酸
分子式:
CAS号:

性质:又称3,4-二羟基-3-环丁烯-1,2-二酮。熔点>300℃(293℃分解)。白色粒状晶体,具强酸性,其pKl=0.5;pK2=3.5。与三氯化铁水溶液产生深紫色。可被溴及高锰酸钾氧化,与苯肼无反应。性质与羧酸相似,可与碱成盐,可生成酯、酰氯、酰胺及混合酸酐。可作为酰化试剂,与富电活化芳环进行酰化反应。与含活泼双键、活泼甲基反应,生成具特殊性能的新化合物。用1,1,2,2-四氟-3,3,4,4-四氯环丁烷或全氯-1,3-丁二烯为原料制取。用作合成有机光导体、液晶显示材料、激光书写记录材料及静电照相光受体材料的中间体。

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