Rubidium nitrate

Crystal structure
	Rb : __ / __ N 3+ __ O 2−
Crystal system	trigonal
Space group	P 3 1 (No. 144)
Lattice parameters	a = 10.474 Å , c = 7.443 Å
General
Surname	Rubidium nitrate
Ratio formula	RbNO 3
Brief description	white solid
External identifiers / databases
EC number	236-060-1
ECHA InfoCard	100,032,767
PubChem	25731
Wikidata	Q2171654
properties
Molar mass	147.47 g mol −1
Physical state	firmly
density	3.11 g cm −3
Melting point	310 ° C
solubility	soluble in water: 442.8 g l −1 (16 ° C)
safety instructions
H and P phrases	H: 272-315-319-335
	P: 220-261-305 + 351 + 338
Toxicological data	4625 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rubidium nitrate is the rubidium salt of nitric acid .

properties

Solubility of Rubidium Nitrate in Water

Rubidium nitrate forms colorless, strongly hygroscopic trigonal crystals at room temperature and is readily soluble in water. The refractive index of the crystals is n _D = 1.524.

designation	Temperature range [° C]	Crystal system	Space group	a [pm]	b [pm]	c [pm]	β	Z
Lattice constants of the modifications of rubidium nitrate
RbNO ₃ - IV	<164	trigonal	P 3 ₁ (No. 144)Template: room group / 144	1047	-	745	-	4th
RbNO ₃ - III	164-220	cubic	Pm 3 m (No. 221)Template: room group / 221	440	-	-	-	1
RbNO ₃ - II	220-291	rhombic	R 3 m (No. 160)Template: room group / 160	548	-	1071	-
RbNO ₃ - I	> 291	cubic	Fm 3 m (No. 225)Template: room group / 225	732	-	-	-	4th

It has a red-violet flame color . It is a strong oxidizing agent and when heated, it decomposes into rubidium nitrite and oxygen :

{\ displaystyle {\ ce {2RbNO3 -> 2RbNO2 + O2 ^}}}

When rubidium nitrate is treated with nitric acid, the acidic nitrates RbH (NO ₃ ) ₂ (melting point 62 ° C) and RbH ₂ (NO ₃ ) ₃ (melting point 39-46 ° C) are formed.

Representation (manufacture)

Rubidium nitrate can be produced from rubidium hydroxide or from elemental rubidium by a salt formation reaction with nitric acid :

{\ displaystyle {\ ce {RbOH + HNO3 -> RbNO3 + H2O}}}

{\ displaystyle {\ ce {2Rb + 2HNO3 -> 2RbNO3 + H2 ^}}}

use

Rubidium nitrate is used as a component of infrared- emitting light sources together with other alkali nitrates as an oxidizing agent.

Individual evidence

↑ ^a ^b Jutta Pohl, Dieter Pohl, Gunadi Adiwidjaja: phase transition in rubidium nitrate at 346 K and Structure at 296, 372, 413 and 437 K . In: Acta Crystallographica Section B . B48, 1992, p. 160–166 , doi : 10.1107 / S0108768191013459 ( Open Access ).
↑ ^a ^b ^c ^d sheet rubidium from Acros, accessed on 20 February 2010 .
↑ ^a ^b ^c data sheet Rubidium nitrate from Sigma-Aldrich , accessed on April 22, 2011 ( PDF ).
^ Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals . 4th edition. tape 3 . Springer, 1997, ISBN 978-3-540-60035-0 , pp. 690 ( limited preview in Google Book search).
^ ^A ^b ^c R.N. Brown, AC McLaren: The Thermal Transformations in Solid Rubidium Nitrate . In: Acta Crystallographica . tape 15 , 1962, pp. 974-976 , doi : 10.1107 / S0365110X62002583 (Open Access).
↑ M. Shamsuzzoha, BW Lucas: Single-Crystal (Neutron) Diffraction Structure of III-Rubidium Nitrate . In: Acta Crystallographica Section C . C43, 1987, pp. 385-388 , doi : 10.1107 / S0108270187095660 ( Open Access ).
↑ VI Nasirov, UG Asadov, А. F. Haziyeva, FG Magerramova: Kinetics of IV-> III Polymorphous Transformation in Rb _0.95 Cs _0.05 NO ₃ Single Crystals . In: Fizika (Baku) . tape 15 , no. 4 , 2009, p. 27–29 ( gov.az [PDF; 206 kB ]).
↑ KO Strømme: On the Crystal Structures of the high-temperature Phases of rubidium nitrate, cesium nitrate, thallium and nitrates . In: Acta Chemica Scandinavica . tape 25 , no. 1 , 1971, p. 211-218 , doi : 10.3891 / acta.chem.scand.25-0211 .
↑ J. Liu, C.-G. Duan, MM Ossowski, WN Mei, RW Smith, JR Hardy: Molecular Dynamics Simulation of Structural Phase Transitions in RbNO ₃ and CsNO ₃ . In: Journal of Solid State Chemistry . tape 160 , 1page = 222-229, August 2001, doi : 10.1006 / jssc.2001.9226 .
↑ R. Abegg, F. Auerbach: Handbuch der inorganic Chemie . tape 2 . S. Hirzel Verlag , 1908, p. 435 ( archive.org ).
↑ Patent DE69333292 : Compressible Infrared Lighting Compositions . Published May 13, 2004 , Inventor: Daniel B. Nielson. ‌

[RT-Struktur-1] Jutta Pohl, Dieter Pohl, Gunadi Adiwidjaja: phase transition in rubidium nitrate at 346 K and Structure at 296, 372, 413 and 437 K . In: Acta Crystallographica Section B . B48, 1992, p. 160–166 , doi : 10.1107 / S0108768191013459 ( Open Access ).

[ACROS-2] sheet rubidium from Acros, accessed on 20 February 2010 .

[Sigma-3] ta sheet Rubidium nitrate from Sigma-Aldrich , accessed on April 22, 2011 ( PDF ).

[Lax-4] Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals . 4th edition. tape 3 . Springer, 1997, ISBN 978-3-540-60035-0 , pp. 690 ( limited preview in Google Book search).

[Brown-5] A ^b ^c R.N. Brown, AC McLaren: The Thermal Transformations in Solid Rubidium Nitrate . In: Acta Crystallographica . tape 15 , 1962, pp. 974-976 , doi : 10.1107 / S0365110X62002583 (Open Access).

[Shamsuzzoha-6] M. Shamsuzzoha, BW Lucas: Single-Crystal (Neutron) Diffraction Structure of III-Rubidium Nitrate . In: Acta Crystallographica Section C . C43, 1987, pp. 385-388 , doi : 10.1107 / S0108270187095660 ( Open Access ).

[Nasirov-7] VI Nasirov, UG Asadov, А. F. Haziyeva, FG Magerramova: Kinetics of IV-> III Polymorphous Transformation in Rb _0.95 Cs _0.05 NO ₃ Single Crystals . In: Fizika (Baku) . tape 15 , no. 4 , 2009, p. 27–29 ( gov.az [PDF; 206 kB ]).

[Stromme-8] KO Strømme: On the Crystal Structures of the high-temperature Phases of rubidium nitrate, cesium nitrate, thallium and nitrates . In: Acta Chemica Scandinavica . tape 25 , no. 1 , 1971, p. 211-218 , doi : 10.3891 / acta.chem.scand.25-0211 .

[Liu-9] J. Liu, C.-G. Duan, MM Ossowski, WN Mei, RW Smith, JR Hardy: Molecular Dynamics Simulation of Structural Phase Transitions in RbNO ₃ and CsNO ₃ . In: Journal of Solid State Chemistry . tape 160 , 1page = 222-229, August 2001, doi : 10.1006 / jssc.2001.9226 .

[Abegg-10] R. Abegg, F. Auerbach: Handbuch der inorganic Chemie . tape 2 . S. Hirzel Verlag , 1908, p. 435 ( archive.org ).

[11] Patent DE69333292 : Compressible Infrared Lighting Compositions . Published May 13, 2004 , Inventor: Daniel B. Nielson. ‌