Common molecules sample 50703

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Empirical formula:	CrO₄^2-
a:	24.325 Å
b:	13.974 Å
c:	21.491 Å
α (alpha):	90.00 °
β (beta):	91.11 °
γ (gamma):	90.00 °
Volume:	7303.80 Å³
Space group:	C2/c
Calculated density:	0.396 g/cm³
Z:	15
Formula weight:	115.994 g/mole
R(F):	0.0484
Common name:	Chromate
Short description:	Salts of chromate are brightly colored yellow to red compounds.
Keyword:	Pigments
Keyword:	oxidation
CSD refcode:	EHIHUY
Structural formula:	C₃₀H₂₄CoN₆²⁺, 0.5(CrO₄^2-), NO₃^-, 7(H₂O)
Layman's explanation:	In 1820, chromate of iron was discovered by Dr. Samuel Hibbert Ware of Edinburgh, Scotland in the Shetland Isles. Chromate exists in equilibrium with dichromate (Cr2O72-), which is a strong oxidizing agent. The brightly colored salts of chromate are used in pigments in paints. Lead chromate is red in color while Barium chromate is yellow. It is also used to treat aluminum in order to protect against corrosion and to prepare the surface for paint and adhesives.
IUPAC name:	Chromium tetraoxide
Miscellaneous comments:	Structure obtained courtesy of the Cambridge Structural Database
Miscellaneous comments:	Structure refined from EHIHUY
Citation of a publication:	A. Wojciechowska, Z. Staszak, W. Bronowska, A. Pietraszko; J. Mol. Struct., 654, (2003), 197.
Lab name:	Common molecules
Sample provider:	Contributed by Indiana University
Status:	Complete, visible to public

Repository Files:
50703.cif	50703.crt	50703.GIF	50703.pdb	50703_a.crt