Potassium imidodisulfonate

• CAS: 14696-74-3
• Catalog Number: ACM14696743
• Category: Main Products
• Molecular Weight: 253.34
• Molecular Formula: HK₂NO₆S₂
• Synonyms: POTASSIUM IMIDODISULFONATE
• IUPAC Name: dipotassium;N-sulfonatosulfamate
• Canonical SMILES: N(S(=O)(=O)[O-])S(=O)(=O)[O-].[K+].[K+]
• InChI Key: HAJLPMNXWZUYTL-UHFFFAOYSA-L
• Melting Point: 430°C(lit.)
• Appearance: Solid
• Exact Mass: 252.85200
• Hazard Statements: Xi
• Safety Description: 26-36

Case Study

Potassium Iminodisulfonate for the Synthesis of Hydrazine Isodisulfonate

Rennebaum, Tobias, et al. Chemistry-A European Journal, 2024, 30(62), e202402337.

Hydrazine isodisulfonate [H2NN(SO3)2]2- can be prepared by a substitution reaction between potassium iminodisulfonate K2[HN(SO3)2] and hydroxylamine-O-sulfonic acid H2NOSO3H. The hydrazine isodisulfonate anion can be crystallized as potassium and barium compounds, respectively.
· Synthesis Procedure
K2[HN(SO3)2] was synthesised starting from K2S2O5 (2.00 equivalents) and KNO2 (1.00 equivalent) in 80 °C reaction. This (1.00 equivalent) was then reacting with H2NOSO3H (1.00 equivalent) in a KOH solution to create K2[H2NN(SO3)2]. Next, K2[H2NN(SO3)2] was salt metathesised to Ba[H2NN(SO3)2](H2O)2 by BaCl2·2H2O.
· Structure of the Hydrazine Disulfonate Anion
The bonding parameters in the anion are pretty much identical in both hydrazine iso-disulfonates K2[H2NN(SO3)2] and Ba[H2NN(SO3)2](H2O)2. The S-N bond lengths vary between 169.8(2) pm and 171.6(2) pm, while the N-N bonds are nearly identical, measuring 143.5(2) pm and 143.6(3) pm, respectively. The nitrogen atom N2 is coordinated in a distorted trigonal-pyramidal arrangement by two sulfonate groups and one neighboring nitrogen atom (N1). The coordination numbers of the metal ions fall within the typical range of 9 to 11. In K2[H2NN(SO3)2], the nitrogen atom from the NH2 group also contributes to K+ coordination, with a K-N distance of 305.5 pm. When comparing the hydrazine disulfonate with the hydrazine iso-disulfonate anion in their corresponding potassium compounds, it was found that the N-N distance remained the same in both anions; however, the S-N bonds in the iso-disulfonate were slightly longer, measuring 170.7(2) pm and 171.1(2) pm, respectively.

Custom Q&A

What is the molecular formula of potassium imidodisulfonate?

The molecular formula of potassium imidodisulfonate is HK2NO6S2.

What are the synonyms of potassium imidodisulfonate?

The synonyms of potassium imidodisulfonate are dipotassium imidodisulfate and N-sulfonatosulfamate.

What is the molecular weight of potassium imidodisulfonate?

The molecular weight of potassium imidodisulfonate is 253.34 g/mol.

What is the CAS number of potassium imidodisulfonate?

The CAS number of potassium imidodisulfonate is 14696-74-3.

What is the IUPAC name of potassium imidodisulfonate?

The IUPAC name of potassium imidodisulfonate is dipotassium N-sulfonatosulfamate.

What is the InChIKey of potassium imidodisulfonate?

The InChIKey of potassium imidodisulfonate is HAJLPMNXWZUYTL-UHFFFAOYSA-L.

How many hydrogen bond donor counts does potassium imidodisulfonate have?

Potassium imidodisulfonate has 1 hydrogen bond donor count.

How many hydrogen bond acceptor counts does potassium imidodisulfonate have?

Potassium imidodisulfonate has 7 hydrogen bond acceptor counts.

How many rotatable bond counts does potassium imidodisulfonate have?

Potassium imidodisulfonate has 0 rotatable bond counts.

What is the formal charge of potassium imidodisulfonate?

The formal charge of potassium imidodisulfonate is 0.