Diglycine oxalate

Diglycine oxalate
Names:	oxalate diglycine oxalate glycine (1:2) oxalate glycinium bis(glycinium) oxalate BGOx
Formula:	2NH2CH2COOH · H2C2O4
Molar mass:	240.167 g/mol
Crystal system:	monoclinic a=4.945 Å, b=9.916 Å, c=10.950 Åα=90°, γ=90°
Shapes:	https://en.crystalls.info/w/uploads/media/b/bc/Rhombic_prism.json Rhombic prism
Color:	colorless
Melting point:	158 °C431.15 K <br />316.4 °F <br />776.07 °R <br />
Decomposition point:	180 °C453.15 K <br />356 °F <br />815.67 °R <br />
Optical properties:	birefringence
Stability:	stable
Toxicity:	slightly toxic

Description

Organic compound, normal salt of glycine and oxalic acid. Doesn't form water hydrates.

Precursors

Reaction between glycine and oxalic acid in water solution

Chemical equation:

2NH₂CH₂COOH + H₂C₂O₄ = 2NH₂CH₂COOH · H₂C₂O₄

For preparation of 100.00g of diglycine oxalate а 62.51g of glycine and 52.49g of oxalic acid dihydrate

dihydrate

anhydrous

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.

Solubility

TableGraph

Temperature	g/100,00 g water
20°C293.15 K <br />68 °F <br />527.67 °R <br />	~31
30°C303.15 K <br />86 °F <br />545.67 °R <br />	~43
35°C308.15 K <br />95 °F <br />554.67 °R <br />	~46
40°C313.15 K <br />104 °F <br />563.67 °R <br />	~52
45°C318.15 K <br />113 °F <br />572.67 °R <br />	~58
50°C323.15 K <br />122 °F <br />581.67 °R <br />	~64

Gallery

• 

  Growing with slow evaporation methodDiglycine oxalate, Dmitry Shintyakov, VKontakteDmitry ShintyakovVKontakte

• 

  Double birefringenceDiglycine oxalate, Dmitry Shintyakov, VKontakteDmitry ShintyakovVKontakte

• 

  Grown in 3 weeksDiglycine oxalate, Eugene Dudko, VKontakteEugene DudkoVKontakte

• 

  Grown in 3 weeksDiglycine oxalate, Eugene Dudko, VKontakteEugene DudkoVKontakte

• 

  Grown in 3 weeksDiglycine oxalate, Eugene Dudko, VKontakteEugene DudkoVKontakte

• 

  Diglycine oxalateEgor Kazakov, VKontakteEgor KazakovVKontakte

Sources

• Personal crystal growing collection
• G.P.Sankar Ganesh, U.Sankar, P.Selvarajan, U.Rajesh kannan, Structural, optical, hardness and impedance studies of Bis-Glycinium Oxalate (BGLO) single crystals
• T. U. Devi, N. Lawrence, R. R. Babu, K. Ramamurthi, G. Bhagavannarayana, Synthesis, Crystal Growth, Optical, Thermal and Mechanical Properties of Organic Nonlinear Optical Material - Bis (Glycinium) Oxalate Single Crystal

Navigation

Oxalates
Salts	Ammonium oxalate ((NH4)2C2O4) • Cobalt(II) oxalate (CoC2O4) • Diglycine oxalate ((NH2CH2COOH)3 · H2C2O4) • Neodymium oxalate (Nd2(C2O4)3) • Oxalic acid (H2C2O4) • Sodium oxalate (Na2C2O4) • Tris(ethylenediamine)nickel oxalate ([Ni(H2NCH2CH2NH2)3]C2O4)
Dioxalatocuprates	Ammonium dioxalatocuprate(II) ((NH4)2[Cu(C2O4)2]) • Potassium dioxalatocuprate(II) (K2[Cu(C2O4)2]) • Sodium dioxalatocuprate(II) (Na2[Cu(C2O4)2])
Trioxalatoaluminates	Potassium trioxalatoaluminate (K3[Al(C2O4)3]) • Sodium trioxalatoaluminate (Na3[Al(C2O4)3])
Trioxalatochromates	Potassium trioxalatochromate(III) (K3[Cr(C2O4)3]) • Sodium trioxalatochromate(III) (Ns3[Cr(C2O4)3])
Trioxalatocobaltates	Potassium trioxalatocobaltate(III) (K3[Co(C2O4)3])
Trioxalatoferrates	Ammonium trioxalatoferrate(III) ((NH4)3[Fe(C2O4)3]) • Lithium trioxalatoferrate(III) (Li3[Fe(C2O4)3]) • Lithium trioxalatoferrate(III)-chloride (Li4[Fe(C2O4)3]Cl) Potassium trioxalatoferrate(III) (K3[Fe(C2O4)3]) • Potassium-sodium trioxalatoferrate(III) (K5Na[Fe(C2O4)3]2) • Sodium trioxalatoferrate(III) (Na3[Fe(C2O4)3])
Ethers	Dimethyl oxalate ((CH3)2C2O4)