Nickel succinate

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Nickel succinate
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C4H6O4.Ni/c5-3(6)1-2-4(7)8;/h1-2H2,(H,5,6)(H,7,8);/q;+2/p-2
    Key: GCCOQKFJIMVKEJ-UHFFFAOYSA-L
  • tetrahydrate: InChI=1S/C4H6O4.Ni.4H2O/c5-3(6)1-2-4(7)8;;;;;/h1-2H2,(H,5,6)(H,7,8);;4*1H2/q;+2;;;;/p-2
    Key: MALGQSMEYFLUKN-UHFFFAOYSA-L
  • C(CC(=O)[O-])C(=O)[O-].[Ni+2]
  • tetrahydrate: C(CC(=O)[O-])C(=O)[O-].O.O.O.O.[Ni+2]
  • MIL-73: C(CC(=O)[O-])C(=O)[O-].C(CC(=O)[O-])C(=O)[O-].C(CC(=O)[O-])C(=O)[O-].C(CC(=O)[O-])C(=O)[O-].O.O.O.O.O.O.O.O.O.O.[O-H].[O-H].[O-H].[O-H].[O-H].[O-H].[Ni+2].[Ni+2].[Ni+2].[Ni+2].[Ni+2].[Ni+2].[Ni+2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Nickel succinate is a transition metal carboxylic acid salt. It crystallises in several forms. Nickel coordinates in a far more diverse way than other transition elements enabling a variety of structures for the same constituents. Succinate is dibasic, so its two ends can connect onto two different nickel atoms. Succininate is flexible, so that it can be bent to different angles and lengths. This allows formation of metal organic framework solids.[1]

In a water solution one Ni2+
 ion can be connected to both ends of a succinate ion to yield a neutral complex.[2]

The neutral nickel succinate NiC4H2O4·4H2O, can be made from succinic acid and nickel carbonate.[3] It dehydrates between 114 and 200°, Andydrous nickel succinate breaks down at 380° and over 450°C only nickel oxide is left.[3] The gaseous decomposition products mainly consist of water, methane, ethylene, propane and carbon dioxide. Minor output included butene and pentane.[4] The salt has two strong infrared absorption bands. One at 3220-2950 cm−1 due to OH and another at 1550 due to carboxylate -COO−.[4]

References

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