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Copper(II) formate and urea adduct

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   Copper(II) formate and urea adduct   
Names: Complex of copper(II) formate and urea
Formula: Cu(HCOO)2 · 2CO(NH2)2 (anhydrous)
Cu(HCOO)2 · 2CO(NH2)2 · 2H2O (dihydrate)
Molar mass: 273.691 g/mol (anhydrous)
309.721 g/mol (dihydrate)
Crystal system: monoclinic (dihydrate)
a=8.275 Å, b=8.346 Å, c=8.018 Åα=90°, β=96.36°, γ=90°
Shapes:
https://en.crystalls.info/w/uploads/media/d/d0/Truncated_deformed_oblique_hexagonal_prism.json
Truncated deformed oblique hexagonal prism
https://en.crystalls.info/w/uploads/media/9/9a/Truncated_deformed_hexagonal_prism.json
Truncated deformed hexagonal prism

Color: bright blue
Optical properties: birefringence
Stability: stable (dihydrate)

Description

Organic compound, adduct of urea and copper(II) formate. From water solutions crystallizes as dihydrate.

Precursors

Reaction between urea and copper(II) formate.

Chemical equation:

Cu(HCOO)2 + 2CO(NH2)2 = Cu(HCOO)2 · 2CO(NH2)2


For preparation of 100.00g of copper(II) formate and urea adduct dihydrate а 38.78g of urea and 72.85g of copper(II) formate tetrahydrate is required.

Dissolve compounds in hot water apart and then mix solutions into one container with intense stirring. Cooling or evaporation of a solution will cause double salt crystallyzation.

Storage conditions

Keep in its original form or under several layers of varnish at average humidity and room temperature. Do not keep crystals near heaters.


Sources



   Formates

Barium formate (Ba(COOH)2) • Calcium formate (Ca(COOH)2) • Cadmium formate (Cd(COOH)2) • Copper(II) formate (Cu(COOH)2) • Copper(II) formate and urea adduct (Cu(HCOO)2 · 2CO(NH2)2) • Iron(II) formate (Fe(COOH)2) • Iron(III) formate (Fe2(COOH)3) • Lead(II) formate (Pb(COOH)2) • Manganese(II) formate (Mn(COOH)2) • Strontium formate (Sr(COOH)2) • Zinc formate (Zn(COOH)2)



   Copper compounds
Salts

Copper (Cu) • Copper(II) acetate (Cu(CH3COO)2) • Copper(II) dihydrophosphate (Cu(H2PO4)2) • Copper(II) formate (Cu(COOH)2) • Copper(II) lactate (Cu(C3H5O3)2) • Copper(II) nitrate (Cu(NO3)2) • Copper(II) sulfamate (Cu(NH2SO3)2) • Copper(II) sulfate (CuSO4) • Copper(II) tartrate (CuC4H4O6) • Copper(II) chloride (CuCl2)

Double salts

Copper-calcium acetate (CuCa(CH3COO)4) • Copper(II)-iron(II) sulfate ((Cu,Fe)SO4) • Copper(II)-ammonium sulfate ((NH4)2Cu(SO4)2) • Copper(II)-potassium sulfate (K2Cu(SO4)2)

Complexes

Dicarbonatocuprates • Dioxalatocuprates • Bis-thetramethylethylenediaminecopper(II) nitrate ([Cu((H3CNCH3)2C4H8)](NO3)2) • Glycinecopper(II) sulfate ([Cu(NH2CH2COOH)]SO4) • Copper(II) formate and urea adduct (Cu(HCOO)2 · 2CO(NH2)2) • Potassium dioxalatocuprate(II) (K2[Cu(C2O4)2]) • Sodium dioxalatocuprate(II) (Na2[Cu(C2O4)2]) • Sodium dicarbonatocuprate(II) (Na2[Cu(CO3)2]) • Tetraamminecopper(II) sulfate ([Cu(NH3)4]SO4) • Tetrachlorocuprates • Tris(hydroxymethyl)methanoaminecopper(II) sulfate ([Cu(NH2C(CH2OH)3)4]SO4)


   Adducts

Diglycine hydrochloride (2NH2CH2COOH · HCl) • Glucose and sodium bromide adduct (2C6H12O6 · NaBr) • Glucose and sodium chloride adduct (2C6H12O6 · NaCl) • Glutamic acid hydrochloride (C5H9NO4 · HCl) • Glutamic acid sulfate (C5H9NO4 · H2SO4) • Hydroxylammonium chloride (NH2OH · HCl) • P-nitroaniline hydrochloride (C6H6N2O2 · HCl) • Urea and sodium chloride adduct (CO(NH4)2 · NaCl) • Copper(II) formate and urea adduct (Cu(HCOO)2 · 2CO(NH2)2) • Urea citrate ((NH2)2CO · C6H8O7)

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