Selenite fluoride explained

A selenite fluoride is a chemical compound or salt that contains fluoride and selenite anions (and). These are mixed anion compounds. Some have third anions, including nitrate, molybdate, oxalate, selenate, silicate and tellurate .

Naming

A selenite fluoride compound may also be called a fluoride oxoselenate(IV) using IUPAC naming for inorganic compounds.

Production

Rare earth selenite fluorides can be produced by dissolving the rare earth selenate into molten lithium fluoride at over 800°C, whereupon the selenate loses oxygen to become selenite, and crystals of the selenite fluoride can form.^[1] Another similar method involves heating the rare earth oxide, with a rare earth fluoride and selenium dioxide with a caesium bromide flux. If glass or silica containers are used, they are eaten away by the molten flux and silicates are formed some of which may be fluoride selenite silicate compounds.^[2]

Related

Related to these are the selenite chlorides and selenite bromides by varying the halogenide. Similar compounds by varying the chalcogen also include the sulfite fluorides and tellurite fluorides.

List

name	formula	ratioSeO3:F	mw	system	space group	unit cell Å	volume	density	optical	references
scandium selenite fluoride	ScSeO3F	1:1		triclinic	P <13	−173°C a=6.2769 b=6.5578 c=4.0627 α=95.478 β=95.332 γ=92.363 Z=2		3.830		^[3]
				monoclinic	P21/m >13	a=4.0643 b =6.6109 c=6.32.35 β=93.298° Z=2
	Na3Ti3O3(SeO3)4F	4:1		hexagonal	P63	a =12.8439 c =5.2339			SHG 6 × KDP	^[4]
dimanganese difluoride selenite	Mn2SeO3F2	1:2	274.83	orthorhombic	Pnma	a = 7.50848 b = 10.350 and c = 5.47697 Z=4			pink	^[5]
ferric difluoride selenite	FeSeO3F	1:1	201.81	monoclinic	P21/n	a=4.9559 b=5.2023 c=12.040 β=97.87 Z=4	307.50	4.359	yellow	^[6]
ammonium diferric trifluoride diselenite	NH4Fe2F3(SeO3)2	2:3								^[7]
piperizinium	[C<sub>4</sub>N<sub>2</sub>H<sub>12</sub>]Fe4F6(SeO3)4	2:3	933.40	monoclinic	C2/c	a=15.168 b=7.3973 c=16.127 β=90.044 Z=5	1928.9	3.14	brown
diethylenetriamine	[C<sub>4</sub>N<sub>3</sub>H<sub>14</sub>]Fe4F6(SeO3)4	2:3
dicobalt difluoride selenite	Co2SeO3F2	1:2	282.82	orthorhombic	Pnma	a = 7.2655 b = 10.001 c = 5.3564 Z=4	389.22	4.826	pink	^[8]
	Ni2(SeO3)F2	1:2	282.3	orthorhombic	Pnma	a=7.1727 b=9.9377 c=5.2364	373.25		yellow	^[9]
dicopper difluoride selenite	Cu2(SeO3)F2	1:2	292.05	orthorhombic	Pnma	a = 7.066 b = 9.590 c = 5.563 Z=4	377.0	5.146	light green	^[10]
dizinc difluoride selenite	Zn2(SeO3)F2	1:2	295.70	orthorhombic	Pnma	a=7.276 b=10.042 c=5.256 Z=4	384.0	5.114	colourless	^[11]
triethylenediamin-di-ium digallium hexafluoride selenite	C6H14N2Ga2F6SeO3	1:6	494.59	Monoclinic	P21/c	a=12.616 b=7.2700 c=13.605 β=104.746 Z=4	1206.8	2.722	colourless	^[12]
ethelenediamin-di-ium gallium trifluoride selenite	C2H10N2GaF3SeO3	1:3	315.80	monoclinic	P21/c	a=9.1107 b=8.0382 c=10.8302 β=90.045 Z=4	793.1	2.2355	colourless
piperizin-di-ium gallium fluoride oxalate selenite hydrate	H2pipGaFSeO3[C<sub>2</sub>O<sub>4</sub>]H2O	1:1	409.87	triclinic	P	a=6.377 b=9.2820 c=11.4112 α=66.53 β=77.44 γ=71.89	585.47	2.325	colourless
	(C4H15N3)2Ga4F2(SeO3)6(C2O4).4H2O	6:2	1467.11	triclinic	P	a=8.9941 b=9.4963 c=11.2959 α=77.13 β=68.073 γ=83.776 Z=1	872.17	2.793	colourless
	Sr(VO2F)(SeO3)		316.52	orthorhombic	Pbca	a=9.7816 b=8.0278 c=12.927 Z=8	1015.07	4.142	yellow	^[13]
yttrium selenite fluoride	YSeO3F	1:1		monoclinic	P21/c <319	a=6.5765 b=6.8971 c=7.1728 β=99.036 Z=4				^[14]
				monoclinc	P 21/m >319	600° a=6.5840 b=6.9809 c=4.3434 β =95.032 Z=2		3.922
	Ag3Ti3O3(SeO3)4F		1042.15	hexagonal	P63	a=12.8975 c=5.2180 Z=2	751.70	4.604	colourless SHG 2×KDP	^[15]
	Ag2ZrF2(SeO3)2		598.88	orthorhombic	Cmca	a=7.3640 b=31.451 c=6.2719	1452.6	5.477	colopurless
dicadmium difluoride selenite	Cd2(SeO3)F2	1:2	389.76	orthorhombic	Pnma	a=7.803 b=10.566 c=5.729 Z=4	472.4	5.480	colourless
ethelenediamin-di-ium indium trifluoride selenite	C2H10N2InF3SeO3		360.90	monoclinic	P21/c	a=9.3066 b=8.3012 c=11.2923 Z=4	871.68	2.750	colourless
caesium triscandium hexafluoride diselenite	CsSc3F6[SeO<sub>3</sub>]2	2:6		trigonal	P3m1	a = 5.6534 c = 10.6987 Z = 1				^[16]
	Cs(TiOF)3(SeO3)2	2:3	635.53	hexagonal	P63mc	a=7.2420 c=11.8152 Z=2	536.65	3.933	Colourless SHG 5xKDP	^[17]
caesium triiron hexafluoride diselenite	CsFe3(SeO3)2F6	2:6		trigonal	Pm1	a=5.459 c=10.537 Z=1	271.9		cyan	^[18]
	Ba(VO2F)(SeO3)		366.24	orthorhombic	Pbca	a=10.0539 b=8.3967 c=13.174	1112.18	4.375	yellow
lanthanum selenite fluoride	LaSeO3F	1:1		monoclinic	P21/c	a = 18.198 b = 7.1575 c = 8.464 β = 96.89 Z = 12				^[19]
cerium selenite fluoride	CeSeO3F	1:1
tetrapraseodymium selenate diselenite hexafluoride	Pr4(SeO3)2(SeO4)F6	2:6		monoclinic	C2/c	a = 22.305 b = 7.1054 c = 8.356 β = 98.05° Z = 4				^[20]
tripraseodymium fluoride tetraselenite	Pr3F[SeO<sub>3</sub>]4								pale green	^[21]
	Pr5F[SiO<sub>4</sub>]2[SeO<sub>3</sub>]3	3:1		triclinic	P	a = 7.0114 b = 9.8268 c = 12.8679 α = 70.552 β = 76.904 γ = 69.417° Z = 2		5.511	pale green
trineodymium fluoride tetraselenite	Nd3(SeO3)4F			hexagonal	P63mc	a=10.515 c=7.1211				^[22]
trisamarium fluoride tetraselenite	Sm3(SeO3)4F			hexagonal	P63mc	a=10.474 c=7.0224
trigadolinium tetraselenite fluoride	Gd3(SeO3)4F	4:1		hexagonal	P63mc	a = 10.443 b = 6.9432 Z=2				^[23]
tridysprosium tetraselenite fluoride	Dy3(SeO3)4F	4:1	1014.34	hexagonal	P63mc	a=10.360 c=6.8647 Z=2
holmium selenite fluoride	HoSeO3F	1:1		monoclinic	P21/c	a=6.5784 b=6.8873 c=7.1825 β =99.213 Z=4		6.43
	Ho3F[SeO<sub>3</sub>]4	4:1		hexagonal	P63mc	a = 10.3024 c = 6.8037 Z = 2				^[24]
erbium selenite fluoride	ErSeO3F	1:1		monoclinic	P21/c	a=6.5553 b=6.8741 c=7.1516 β =99.020 Z=4		6.54
	Er3F[SiO<sub>4</sub>][SeO<sub>3</sub>]2	2:1		orthorhombic	Pnna	a = 5.8692 b = 15.2931 c = 10.2967 Z = 4			pink	^[25]
thulium selenite fluoride	TmSeO3F	1:1		monoclinic	P21/c	a=6.5342 b=68607 c=7.1213 β =98,828 Z=4		6.63
ytterbium selenite fluoride	YbSeO3F	1:1		monoclinic	P21/c	a=6.5146 b=6.8475 c=7.0924 β =98.637 Z=4		6.77
Lutetium selenite fluoride	LuF[SeO<sub>3</sub>]	1:1		monoclinic	P21/c	−173°C: a=6.4839 b=6.8128 c=7.0581 β=98.657 Z=4	308.23	6.916		^[26]
				triclinic	P	a=6.4486 b=6.8441 c=4.2798 α=94.063 β=98.657 γ=91.895 Z=2	187.04	5.698
				monoclinic	P21/m	173°C: a=6.4734 b=6.8702 c=4.2843 β=95.602 Z=2	189.63	5.621
trilutetium fluoride tetraselenite	Lu3F(SeO3)4	4:1	1051.75	trigonal	P63	a=9.883 c=7.066 Z=2	597.7	5.844	colourless SHG 2.5×KDP	^[27]
	PbVO2(SeO3)F	1:1	436.09	orthorhombic	Pbca	a=9.812 b=8.147 c=13.026 Z=8	1041.3	5.563	yellow	^[28]
cadmium lead fluoride nitrate selenite	PbCdF(SeO3)(NO3)	1:1		orthorhombic	Pca21	a=11.121 b=10.366 c=5.3950 Z=4	621.9	5.634	SHG 2.6×KDP band gap 4.42 eV	^[29]
bismuth selenite fluoride	BiFSeO3	1:1	354.94	orthorhombic	Pca21	a=6.6774 b=6.8872 c=7.4702 Z=4	343.54	6.862	colourless SHG 13.5×KDP	^[30]
tribismuth triselenite pyroselenite fluoride	Bi3(SeO3)3(Se2O5)F	3:1		monoclinic	F21				SHG 3×KDP	^[31]
dibismuth potassium pentafluoride selenite	KBi2SeO3F5	1:5	679.02	orthorhombic	Pbcm	a=4.553 b=17.80 c=8.80 Z=4	712.9	6.326	white band gap 4.08 eV	^[32]
dibismuth rubidium pentafluoride selenite	RbBi2SeO3F5	1:5	725.39	Triclinic	P	a=8.842 b=8.917 c=9.63 α=88.28 β=89.82 γ=89.76 Z=4	758.9	6.349	white band gap 4.18 eV
	RbBi(SeO3)F2	1:2	459.41	orthorhombic	Pnma	a=13.251 b=6.073 c=6.780 Z=4	545.6			^[33]
	Bi4TiO2F4(SeO3)4	4:4	1499.66	monoclinic	P21/c	a=7.0237 b=6.6824 c=17.3240 β=106.637 Z=2	779.07	6.393	colourless	^[34]
	Bi4NbO3F3(SeO3)4	4:3	1541.67	monoclinic	P21/c	a=7.0448 b=6.6814 c=17.4051 β=106.931 Z=2	783.73	6.533	colourless
	Bi4TeO4F2(TeO3)2(SeO3)2	2:2	1670.64	monoclinic	P21/c	a=7.0304 b=6.6782 c=17.355 β=106.155 Z=2	782.66	7.089	colourless
	Bi2F2(MoO4)(SeO3)	1:2	742.86	monoclinic	P21/c	a=7.1005 b=9.660 c=12.972 β=12.091 Z=4	753.82	6.546	colourless
	Bi2ZrO2F2(SeO3)2	2:2	833.10	triclinic	P	a=5.8047 b=6.3469 c=6.7419 α=77.665 β=71.365 γ=72.795 Z=1	222.87	6.207	colourless
	PbBi(SeO3)2F	2:1		orthorhombic	Pca21	a=12.9672 b=4.5022 c=11.8221			SHG 10.5×KDP; band gap 3.75 eV	^[35]

SHG=second harmonic generator

Notes and References

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