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pentachloride
pentachloride n.
Brit. 
/ˌpɛntəˈklɔːrʌɪd/
, /ˌpɛntəˈklɔːrʌɪd/U.S. /ˌpɛn(t)əˈklɔˌraɪd/
/ˌpɛn(t)əˈklɔˌraɪd/ΚΠ
1849 D. Campbell Pract. Text-bk. Inorg. Chem. 290 Pentachloride of antimony, SbCl5.
1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 227 Phosphorus and antimony can unite with five atoms of chlorine to form the pentachlorides.
1991 Chron. Higher Educ. 20 Feb. a8/1 The chemists produced molybdenum disulfide..by mixing two solids, molybdenum pentachloride and sodium sulfide, in an inert atmosphere.
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