英语词汇“phosphorus heptasulfide”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	phosphorus heptasulfide
释义	phosphorus hep·ta·sulfide \-\|heptə+\ noun Etymology: heptasulfide from hepta- + sulfide : a yellow crystalline compound P₄S₇ made by heating a mixture of phosphorus and sulfur in a ratio of about 4 to 7 equivalents, regarded formerly as a trisulfide, and used chiefly in the synthesis of organic sulfur compounds (as thiophene); tetra-phosphorus heptasulfide
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