I did not find any papers about crystallographic characterizations about Cs2P5. However, from Chem. Rev. by HG Von Schnering, W Hönle (1988) ( doi: 10.1021/cr00083a012), it mentions "the yellow M3P7 (in the literature formerly erroneously called M2P5) have been prepared in NH3(l)", which indicates that Cs2P5 is actually Cs3P7. -- Leiem ( talk) 17:32, 3 March 2024 (UTC)
I did not find any papers about crystallographic characterizations about Cs2P5. However, from Chem. Rev. by HG Von Schnering, W Hönle (1988) ( doi: 10.1021/cr00083a012), it mentions "the yellow M3P7 (in the literature formerly erroneously called M2P5) have been prepared in NH3(l)", which indicates that Cs2P5 is actually Cs3P7. -- Leiem ( talk) 17:32, 3 March 2024 (UTC)