Zinc glycinate

Zinc glycinate
Names
	Other names zinc bis(glycinate) monohydrate
Identifiers
CAS Number	14281-83-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	133891;
DrugBank	DB14493;
ECHA InfoCard	100.034.687
EC Number	238-173-1;
PubChem CID	151910;
UNII	681VJX72FE;
CompTox Dashboard (EPA)	DTXSID60162193 ;
	InChI InChI=1S/2C2H5NO2.Zn/c23-1-2(4)5;/h21,3H2,(H,4,5);/q;;+2/p-2 Key: UOXSXMSTSYWNMH-UHFFFAOYSA-L;
	SMILES C(C(=O)[O-])N.C(C(=O)[O-])N.[Zn+2];
Properties
Chemical formula	C4H8N2O4Zn
Molar mass	213.50 g·mol−1
Appearance	white solid
Density	1.99 g/cm3
Hazards
	GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H318, H400
Precautionary statements	P264, P264+P265, P270, P273, P280, P301+P317, P302+P352, P305+P354+P338, P317, P321, P330, P332+P317, P362+P364, P391, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Zinc glycinate refers to compounds of Zn²⁺ with various amounts of glycinate anion as a ligand. A well-characterized derivative has the formula Zn(H₂NCH₂CO₂)₂·H₂O. It arises by treating zinc oxide with glycine. According to X-ray crystallography, the solid is a coordination polymer with one water of crystallization per formula unit.^[1]

Other zinc-glycinates exist in aqueous solution including 1:1 and 1:3 species. The latter is the octahedral anion Zn(H₂NCH₂CO₂)−3.^[2]^[3]

The compound, which is classified as one of the transition metal amino acid complexes, is marketed as a nutritional supplement.

References

^ Newman, J. M.; Bear, C. A.; Hambley, T. W.; Freeman, H. C. (1990). "Structure of bis(glycinato)zinc(II) monohydrate, a five-coordinate zinc(II) complex". Acta Crystallographica Section C Crystal Structure Communications. 46 (1): 44–48. Bibcode:1990AcCrC..46...44N. doi:10.1107/S0108270189005664.
^ Ozutsumi, Kazuhiko; Yamaguchi, Toshio; Ohtaki, Hitoshi; Tohji, Kazuyuki; Udagawa, Yasuo (1985). "Structure of Ni(II)– and Zn(II)–Glycinato Complexes in Aqueous Solution Determined by EXAFS Spectroscopy". Bulletin of the Chemical Society of Japan. 58 (10): 2786–2792. doi:10.1246/bcsj.58.2786.
^ Ozutsumi, Kazuhiko; Ohtaki, Hitoshi (1985). "An X-Ray Diffraction Study on the Structures of Mono(glycinato)zinc(II) and Tris(glycinato)zincate(II) Complexes in Aqueous Solution". Bulletin of the Chemical Society of Japan. 58 (6): 1651–1657. doi:10.1246/bcsj.58.1651.

[1] Newman, J. M.; Bear, C. A.; Hambley, T. W.; Freeman, H. C. (1990). "Structure of bis(glycinato)zinc(II) monohydrate, a five-coordinate zinc(II) complex". Acta Crystallographica Section C Crystal Structure Communications. 46 (1): 44–48. Bibcode:1990AcCrC..46...44N. doi:10.1107/S0108270189005664.

[2] Ozutsumi, Kazuhiko; Yamaguchi, Toshio; Ohtaki, Hitoshi; Tohji, Kazuyuki; Udagawa, Yasuo (1985). "Structure of Ni(II)– and Zn(II)–Glycinato Complexes in Aqueous Solution Determined by EXAFS Spectroscopy". Bulletin of the Chemical Society of Japan. 58 (10): 2786–2792. doi:10.1246/bcsj.58.2786.

[3] Ozutsumi, Kazuhiko; Ohtaki, Hitoshi (1985). "An X-Ray Diffraction Study on the Structures of Mono(glycinato)zinc(II) and Tris(glycinato)zincate(II) Complexes in Aqueous Solution". Bulletin of the Chemical Society of Japan. 58 (6): 1651–1657. doi:10.1246/bcsj.58.1651.

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