联苯 Biphenyl

（重定向自Diphenyl）

联苯（化学式：C₁₂H₁₀）是两个苯基相连形成的化合物。无色至淡黄色片状晶体，有特殊香味。常用作有机合成前体，衍生物包括联苯胺、联苯醚、八溴联苯醚、多氯联苯等。联苯天然存在于煤焦油、原油和天然气中。不溶于水，但溶于有机溶剂中。

联苯中间的化学键可以自由旋转，但若四个邻位有体积较大的基团时，旋转受阻，会产生阻转异构体。此类型的化合物（如BINAP）可以作手性配体。以联苯为例，其平衡态的扭转角为44.4°，0°和90°时的能垒分别为6.0kJ/mol和6.5kJ/mol。

取代联苯可通过Suzuki反应和Ullmann反应等偶联反应制取。

单词	diphenyl
释义	diphenyl /daɪfenɪl//daɪ'fɛnəl/ 英汉-汉英词典 n. [化]联苯；[医]二苯基词组 \| 习惯用语 diphenyl ether [化]二苯醚英语例句库 This paper reviews the research and development of phosgene Derivates,including diphenyl ketone,chlorocarbonate,isocya-nate,acyl chloride and carbonates. 本文综述了光气下游精细化学品的开发及生产进展,包括二苯甲酮类、氯代甲酯类、异氰酸酯类、酰氯类、碳酸酯类化合物。 The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes. 芳基甲烷在有机溶剂介质中、碱催化下的氧化缩合反应,是合成二苯乙烯(烷)类化合物的重要途径. Methods Using the assay system of peroxide value (POV), diphenyl picryl-hydrazyl (DPPH), the antioxidative activities of various extracts were studied and comparedwith VE and VC. 方法以过氧化值(POV)法和DPPH法对提取物进行抗氧化活性的测定,以维生素E(VE)和维生素C(VC)作抗氧化性能对照。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。原声例句 Scishow 精选系列 When you crack a typical glow-stick, you're allowing a hydrogen peroxide solution to react with diphenyl oxilate. 当你打开一个常见的荧光棒时，就是过氧化氢溶液在和二苯醚反应。中文百科联苯 Biphenyl （重定向自Diphenyl）联苯（化学式：C₁₂H₁₀）是两个苯基相连形成的化合物。无色至淡黄色片状晶体，有特殊香味。常用作有机合成前体，衍生物包括联苯胺、联苯醚、八溴联苯醚、多氯联苯等。联苯天然存在于煤焦油、原油和天然气中。不溶于水，但溶于有机溶剂中。联苯中间的化学键可以自由旋转，但若四个邻位有体积较大的基团时，旋转受阻，会产生阻转异构体。此类型的化合物（如BINAP）可以作手性配体。以联苯为例，其平衡态的扭转角为44.4°，0°和90°时的能垒分别为6.0kJ/mol和6.5kJ/mol。取代联苯可通过Suzuki反应和Ullmann反应等偶联反应制取。英语百科 Biphenyl 联苯（重定向自Diphenyl） Biphenyl (or diphenyl or phenylbenzene or 1,1′-biphenyl or lemonene) is an organic compound that forms colorless crystals. It has a distinctively pleasant smell. Biphenyl is an aromatic hydrocarbon with a molecular formula (C₆H₅)₂. It is notable as a starting material for the production of polychlorinated biphenyls (PCBs), which were once widely used as dielectric fluids and heat transfer agents.
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diphenyl /daɪfenɪl//daɪ'fɛnəl/

联苯 Biphenyl

Biphenyl 联苯