Constituent Co(II)-nitrate hexahydrate | SSHADE

Constituent

Name: Co(II)-nitrate hexahydrate
Official name: Cobalt(II) nitrate hexahydrate

Family: ionic solid
Class: normal salt
Compound type: nitrate

Constituent abundance in material

Relevance: main - major
Arrangement: single phase
Mass fraction: 1.0
Mole fraction: 1.0

Chemical composition

Formula: $Co^{2+}.(NO_3^-)_2 \bullet 6H_2O$
Chemical formula: Co(N03)2.6H2O
Elemental formula: (Co2+) (N+)4 O8 (O-)4 H12
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Co^{2+}$	Cobaltous cation	element	1	0.1111111111111111	1	constituent cation	main
	$(NO_3)^-$	Nitrate anion	chemical function	2	0.2222222222222222	1	anionic radical	main
	$H_2O$	Water	molecule	6	0.6666666666666666	1	hydration	main

Composition comments: better described as hexaaquacobalt(II) nitrate, [Co(OH_2)_6]^{2+}[NO_3]^-_2

Chemical functions and bonds

Chemical functions

	Function	Number	Relevance
	$(NO_3)^-$	2
	$R-OH$	2	main

Chemical bonds

	Bond	Number	Relevance
	$\cdot Co^{2+} \cdot O^{-}-$	2
	$-O-H$	2	main
	$\dddot - \dddot - N^+ \dddot - O^{-2/3}$	3

Class: normal salts (07)
Type: hydrated simple normal salts (07.04)

Phase type: crystalline

Crystallography

Crystal system: monoclinic
Comments: consists of discrete $[Co(OH_2)6]^{2+} and [NO_3]^−$ ions

Texture: polycrystalline

Physical properties

Molar mass: 291.03 $g/mol$
Density: 1.88 $g/cm^3$

Optical properties

Refringence type: biaxial
Refraction index $n_{\alpha}$: 1.52