Sodium pertechnetate

Crystal structure
	__ Na + __ Tc 7+ __ O 2−
Crystal system	tetragonal
Space group	I 4 1 / a (No. 88)
Lattice parameters	a = 534.2 pm; c = 1187.4 pm;
General
Surname	Sodium pertechnetate
Ratio formula	NaTcO 4
Brief description	White dust
External identifiers / databases
EC number	237-273-2
ECHA InfoCard	100,033,870
Wikidata	Q1096709
properties
Molar mass	169.89 g mol −1
Physical state	firmly
solubility	67.7 g l −1 (25 ° C)
Hazard and safety information
	; Radioactive
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sodium pertechnetate , NaTcO _4, is a chemical compound of sodium from the group of pertechnetates .

Extraction and presentation

The neutralization of pertechnetic acid with sodium hydroxide creates sodium pertechnetate .

${\ displaystyle {\ ce {NaOH + HTcO4 -> NaTcO4 + H2O}}}$

properties

The salt is tetragonal. The Tc – O distance is 173.7 pm and the Na – O distance is between 253.3 and 276.25 pm. The angle of the O-Tc-O bond is between 108.03 and 112.4 °. The crystal structure of sodium pertechnetate is given with the space group I 4 ₁ / a (space group no. 88) with the lattice parameters a = 534.2 pm and c = 1187.4 pm at 25 ° C. At −173 ° C the lattice parameters are a = 529.45 pm and c = 1174.70 pm.

Individual evidence

↑ ^a ^b Klaus Schwochau: Technetium: Chemistry and Radiopharmaceutical Application . John Wiley & Sons, 2008, ISBN 3-527-61337-4 , pp. 129 .
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
^ ^A ^b Jamie Weaver, Chuck Z. Soderquist, Nancy M. Washton, Andrew S. Lipton, Paul L. Gassman, Wayne W. Lukens, Albert A. Kruger, Nathalie A. Wall, John S. McCloy: Chemical Trends in Solid Alkali pertechnetates . Inorg. Chem., February 2017, p. 2533-2544 , doi : 10.1021 / acs.inorgchem.6b02694 .
↑ Konstantin E. German, Mikhail S. Grigoriev, Bogdan L. Garashchenko, Alexander V. Kopytin, Ekaterina A. Tyupina: Redetermination of the crystal structure of NaTcO4 at 100 and 296 K based on single-crystal X-ray data . July 2017, p. 1037-1040 , doi : 10.1107 / S2056989017008362 .

[Technetium:_Chemistry_and_Radiopharmaceutical_Applications-1] Klaus Schwochau: Technetium: Chemistry and Radiopharmaceutical Application . John Wiley & Sons, 2008, ISBN 3-527-61337-4 , pp. 129 .

[NV-2] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.

[Chemical_Trends_in_Solid_Alkali_Pertechnetates-3] A ^b Jamie Weaver, Chuck Z. Soderquist, Nancy M. Washton, Andrew S. Lipton, Paul L. Gassman, Wayne W. Lukens, Albert A. Kruger, Nathalie A. Wall, John S. McCloy: Chemical Trends in Solid Alkali pertechnetates . Inorg. Chem., February 2017, p. 2533-2544 , doi : 10.1021 / acs.inorgchem.6b02694 .

[4] Konstantin E. German, Mikhail S. Grigoriev, Bogdan L. Garashchenko, Alexander V. Kopytin, Ekaterina A. Tyupina: Redetermination of the crystal structure of NaTcO4 at 100 and 296 K based on single-crystal X-ray data . July 2017, p. 1037-1040 , doi : 10.1107 / S2056989017008362 .