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Formula For Phosphorus Tribromide
磷($P$)与溴($Br$)反应可生成三溴化磷($PBr_{3}$)。磷于溴中,二者相化合。当适量之磷遇足量之溴,发生如下变化:
$2P + 3Br_{2}\stackrel{一定条件}{=\!=\!=}2PBr_{3}$ 。此反应时,可观得溴之颜色渐消,生成之三溴化磷为无色或淡黄色之发烟液体。其具刺激性气味,且有腐蚀性。三溴化磷在诸多化学合成领域用途颇广,可作溴化剂等,于有机合成反应中常参与诸多重要反应步骤。
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