A Phosphide chloride is a mixed anion compound containing both phosphide (P3−) and chloride (Cl−) ions.
A common structural element is P73− which is called heptaphosphanortricyclane with a formal IUPAC name of heptaphosphatricyclo[2.2.1.02,6]heptane.
Group 12 elements, cadmium and mercury are in most of the known compounds.
List nameformulaformulaweightcrystalsystemspacegroupunit cell ÅvolumedensitycommentsrefCa3PCl3cubicPmma=5.713 Z=1186.482.29Cu6PS5Cl607.96cubicP3ma=9.6962 Z=4911.64.430redSr2PClcubica=6.18Sr2P7ClmonoclinicC2/ca=14.571 b=12.212 c=22.292 β=103.740° Z=1638533.948P73–, clustersAg6PS5ClcubicP3ma=10.3514 Z=41109.25.234orangeα-Cd3PCl3hexagonala=7.63 c=7.13pale yellow >530 °C or quenchedβ-Cd3PCl3monoclinica=6.99 b=7.97 c=7.38 β=118.1°pale yellow <530 °CCd4P2Cl3617.89cubic Paa=12.1474 Z=81792.54.579yellow; band gap 2.36 eVCd2P3ClmonoclinicC2/ca=7.98 b=8.98 c=7.55 β=brown; band gap 1.87Cd2PCl2monoclinicP21/na=7.736 b=8.957 c=7.880 β=118.92° Z=4477.934.540yellowCd7P4Cl6cubicPaa=11.93light greenBa2P7ClmonoclinicP21/ma = 11.726, b = 6.829, c = 6.337, β = 95.27°, Z = 2P73–, clustersLa3Zn4P6ClorthorhombicCmcma= 4.0576 b 13.632 c 21.547 Z=41191.85.013black; thermal conductivity 0.7 Wm−1 K−1 (low)Eu2PClcubicFm3ma = 6.106, Z = 2W6PCl17orthorhombicImm2a=6.7835 b=15.8762 c=10.0727 Z=21084.795.3168blackW4(PCl)Cl10monoclinicC2/ma=13.257 b=9.850 c=11.400 β=91.38 Z=41488.25.161black; chloro-phosphinidene ligand[Hg4P2][HfCl6]orthorhombicPbcaa=12.919 b=13.263 c=16.239 Z=827835.994yellowHg2PCl2monoclinic I2/ma=7.643,b=7.977,c=8.539,β=115.23°,Z=4469.87.113yellowHg2P3ClmonoclinicC2/ca = 7.834, b = 8.844, c = 7.591, β = 98.68°, Z = 4[Hg6P4](TiCl6)ClcubicPaa=11.7675, Z=41627.26.627black or dark brown(Hg6P4)(CrCl6)Cl1627.57cubicPaa=11.7364 Z=41616.66.687yellow; resistivity is humidity sensitive(Hg6P4)(CuCl3)2monoclinicC2/ca=23.633 b=8.956 c=14.248 β =124.213° Z=62493.96.660pinkish-red; ferroelectric below 37 K: 114 μC m−2(Hg23P12)(ZnCl4)6hexagonalP2ma=12.9774 c=11.749 Z=11713.66.035yellow(Hg11P4)(GaCl4)4monoclinicC2/ma=12.762 b=7.353 c=22.040 β=100.32 Z=22034.75.185yellow[Hg4P2][ZrCl6]orthorhombicPbcaa=12.899 b=13.255 c=16.196 Z=82769.15.604yellowHg4Ag5P8Cl5orthorhombicCmcma=11.1426 b=14.5064 c=11.8444 Z=41914.56.129high tempHg4Ag5P8Cl5monoclinicC2/ma=14.490 b=10.904 c=6.2863 β=104.094 Z=2963.46.090[Hg6P4Cl3](SnCl3)cubicP213a = 11.865 Z=4(Hg6P4Cl3)(PbCl3)cubicP213a=11.8837 Z=41678.246.916yellow
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