Copper (II) tetrafluoroborate

Structural formula
General
Surname	Copper (II) tetrafluoroborate
Molecular formula	Cu [BF 4 ] 2
External identifiers / databases
CAS number 38465-60-0 207121-39-9 (hydrate) EC number 253-959-4 ECHA InfoCard 100.049.037 PubChem 170058 Wikidata Q1387655
properties
Molar mass	237.16 g mol −1 (anhydrous)
Physical state	solid (hydrate)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 302-312-314-332 P: 280-305 + 351 + 338-310
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Copper (II) tetrafluoroborate is an inorganic compound. It is a salt of copper in the + II oxidation state with tetrafluoroboric acid .

presentation

Copper (II) tetrafluoroborate can be prepared by reacting copper (II) oxide , carbonate or hydroxide with aqueous tetrafluoroboric acid .

${\displaystyle \mathrm {CuO\ +\ 2\ HBF_{4}\longrightarrow \ Cu[BF_{4}]_{2}\ +\ H_{2}O} }$

properties

Copper (II) tetrafluoroborate crystallizes with an indefinite number of water of crystallization molecules. It decomposes in moist air or in the presence of water.

use

The tetrafluoroborate anion is one of the weakly coordinating anions , which is why it can easily be exchanged for other ligands . For this reason, copper (II) tetrafluoroborate can be used for the synthesis of copper complexes .

Individual evidence

1. ↑ ^{a b c d} data sheet Copper (II) tetrafluoroborate hydrate from Sigma-Aldrich , accessed on February 4, 2019 ( PDF ).
2. ↑ Entry on fluoridoborates. In: Römpp Online . Georg Thieme Verlag, accessed on December 29, 2014.