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|Section2= |Section7= }} Calcium monophosphide is the inorganic compound with the formula CaP. The term "calcium phosphide" also describes the composition Ca3P2, which is also called calcium phosphide. CaP and Ca3P2 are completely different materials. CaP is black, Ca3P2 is red-brown. The monophosphide decomposes to Ca3P2 at about 600 °C. :3 CaP → Ca3P2 + 1/4 P4 ==Structure and properties== The structures of CaP and sodium peroxide (Na2O2) are very similar.〔Iandelli, A. and Franceschi, E., "On the crystal structure of the compounds CaP, SrP, CaAs, SrAs and EuAs", Journal of the Less Common Metals, 1973, volume 30, pp. 211-216. 〕 The solid is described as a salt: (Ca2+)2P24−, or Ca2P2. Since the bonding is ionic, the diphosphide centers carry negative charge and are easily protonated. Upon hydrolysis this material releases diphosphine (P2H4): :Ca2P2 + 4 H2O → 2 Ca(OH)2 + P2H4 The hydrolyses of CaP and calcium carbide (CaC2) are similar, except that diphosphine spontaneously ignites in air. Thus, CaP must be protected from air. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「calcium monophosphide」の詳細全文を読む スポンサード リンク
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