Global InformationPotassium tetracyanonickelate information
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| Other names
Potassium tetracyanonickelate(II); dipotassium tetracyanonickelate
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CAS Number
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3D model (JSmol)
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| ECHA InfoCard | 100.034.605 |
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PubChem CID
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CompTox Dashboard (EPA)
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InChI
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SMILES
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| Properties | |
Chemical formula
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K2Ni(CN)4 |
| Appearance | yellow solid |
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Pictograms
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Signal word
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Danger |
Hazard statements
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H300, H310, H330, H410 |
Precautionary statements
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P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P304+P340, P310, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Potassium tetracyanonickelate (IUPAC: Potassium tetracyanido nickelate(II)) is the inorganic compound with the formula K2Ni(CN)4. It is usually encountered as the monohydrate but the anhydrous salt is also known. Both are yellow, water-soluble, diamagnetic solids. The salt consists of potassium ions and the tetracyanonickelate coordination complex, which is square planar. The [Ni(CN)4]2- anions are arranged in a columnar structure with Ni---Ni distances of 4.294 Å, which is well beyond the sum of the van der Waals radius of the nickel cation.[1] This columnar structure resembles those of the other [M(CN)4]2- anions of the heavy congeners of the group 10 metals (M = Pd, Pt).
- ^ Vannerberg, Nils Gosta (1964). "The Crystal Structure of K2Ni(CN)4" (PDF). Acta Chemica Scandinavica. 18 (10): 2385–2391. doi:10.3891/acta.chem.scand.18-2385. Retrieved 29 April 2016. ICSD number 24099