34171-69-2

Basic information

• Product Name: POTASSIUM TRICYANOMETHANIDE
• Synonyms: POTASSIUM TRICYANOMETHANIDE;TRICYANOMETHANATE POTASSIUM SALT;Cyanoform;Potassiumtricyanomethanide,min.98%;Potassium tricyanomethanide, min. 98%;Potassium cyanoform
• CAS NO: 34171-69-2
• Molecular Formula: C₄N₃*K
• Molecular Weight: 129.16
• Product Categories: metal cyano complex
• Mol File: 34171-69-2.mol
• Article Data: 4

Chemical Properties

• Melting Point: 298°C(lit.)
• Boiling Point: 178.9°C at 760 mmHg
• Flash Point: 62°C
• Appearance: Off-white/Crystalline
• Vapor Pressure: 0.965mmHg at 25°C
• Water Solubility: Soluble in water.
• CAS DataBase Reference: POTASSIUM TRICYANOMETHANIDE(CAS DataBase Reference)
• NIST Chemistry Reference: POTASSIUM TRICYANOMETHANIDE(34171-69-2)
• EPA Substance Registry System: POTASSIUM TRICYANOMETHANIDE(34171-69-2)

Safety Data

• Statements: 23/24/25
• Safety Statements: 26-36/37/39
• RIDADR: 3276
• HazardClass: 6.1
• PackingGroup: II
• Hazardous Substances Data: 34171-69-2(Hazardous Substances Data)

Usage

Uses

Potassium Tricyanomethanide can be used for electrolytic composition and electrochemical double layer capacitors.

InChI:InChI=1/C4N3.K/c5-1-4(2-6)3-7;/q-1;+1

Synthetic route

potassium cyanide (151-50-8) + complex of dibromomalononitrile with potassium bromide → potassium tricyanomethanide (34171-69-2)

Conditions	Yield
In acetone at 35 - 40℃; for 1.5h;	58%

1,2-dimethoxyethane (110-71-4) → potassium tricyanomethanide (34171-69-2)

Conditions	Yield
In diethyl ether
In diethyl ether

potassium cyanide + malononitrile (109-77-3) → potassium tricyanomethanide (34171-69-2)

Conditions

Yield

With KBr; Br2 In 1,2-dimethoxyethane malonitrile and potassium bromide dissolved in water, bromine added at 5°C to stirred soln., dibromomalonitrile-potassium bromide complex produced was removed by filtration, washed with water, dried over P2O5under high vac.; potassium cyanide dissolved in dimethoxyethane, potassium bromide complex added, stirred for 1.5 h, heated to reflux briefly, hot soln. filtered, cooled overnight, crystn. by adding ether, filtration;

[Cu(bis(2-pyridylcarbonyl)amidato)(H2O)2](NO3) * 2 H2O + water (7732-18-5) + potassium tricyanomethanide (34171-69-2) → [Cu(bis(2-pyridylcarbonyl)amidate)(tricyanomethanide)]n (1017235-47-0)

Conditions	Yield
In water equimolar aq. soln. of Cu-compound slowly diffused into aq. K-compound for 6 weeks at room temp.; elem. anal.;	100%

copper(II) nitrate trihydrate + 2,3-bis(2'-pyridyl)pyrazine (25005-96-3) + water (7732-18-5) + potassium tricyanomethanide (34171-69-2) → [Cu2(2,3-bis(2-pyridyl)pyrazine)2(tricyanomethanide)3(H2O)0.5](tricyanomethanide)0.5H2O

Conditions	Yield
In water in H-tube; aq. soln. of Cu salt and 2,3-bis(2-pyridyl)pyrazine in one arm and aq. soln. of K tricyanomethanide in the other arm subjected to slow diffusion at room temp.; crystals collected; elem. anal.;	99%

copper(II) nitrate trihydrate + 2,3-bis(2-pyridyl)quinoxaline (23309-74-2) + potassium tricyanomethanide (34171-69-2) → [Cu(2,3-bis(2-pyridyl)quinoxaline)(tricyanomethanide)2]

Conditions	Yield
In water in H-tube; aq. soln. of Cu salt and 2,3-bis(2-pyridyl)quinoxaline in onearm and aq. soln. of K tricyanomethanide in the other arm subjected to slow diffusion at room temp.; crystals collected; elem. anal.;	99%

copper(II) nitrate trihydrate + potassium tricyanomethanide (34171-69-2) + 2-(2'-pyridyl)imidazole (18653-75-3) → [Cu(2-(2-pyridyl)imidazole)(tricyanomethanide)2]n

Conditions	Yield
In water aq. soln. of K-salt added to aq. soln. of mixt. of Cu(NO3)2*3H2O and ligand; elem. anal.;	99%

2,2':6,2''-terpyridine (1148-79-4) + copper(II) nitrate trihydrate + potassium tricyanomethanide (34171-69-2) → [Cu(2,2':6',2''-terpyridine)(tricyanomethanide)*tricyanomethanide]n

Conditions	Yield
In water aq. soln. of K-salt slow diffused into aq. soln. of mixt. of Cu(NO3)2*3H2O and ligand in H-shaped tube for 1 month; elem. anal.;	99%

triaqua[bis(2-pyrimidylcarbonyl)amidate]copper(II) nitrate dihydrate + potassium tricyanomethanide (34171-69-2) → [Cu(bis(2-pyrimidylcarbonyl)amidate)(tricyanomethanide)(H2O)] (1059605-13-8)

Conditions	Yield
In water aq. soln. of Cu complex and K salt was slowly evapd. at room temp.; filtered; washed (cold H2O); kept in desiccator over CaCl2; elem. anal.;	99%

potassium tricyanomethanide (34171-69-2) + triethylamine (121-44-8) → triethylammonium tricyanomethanide (94072-39-6)

Conditions	Yield
Stage #1: potassium tricyanomethanide With Amberlite IR120-H In water for 4h; Stage #2: triethylamine In methanol; water at 20℃; for 0.5h; Product distribution / selectivity;	99%

(NC4(C2H5)2(CHC4(CH3)(C2H5)2N)2)Zn(CH3COO) + potassium tricyanomethanide (34171-69-2) → (NC4(C2H5)2(CHC4(CH3)(C2H5)2N)2)Zn(C(CN)3) (925205-44-3)

Conditions	Yield
In diethyl ether; water mixt. Zn complex in Et2O and KC(CN)3 in water was stirred for 16 h; org. phase was washed with water, volatiles were removed in vacuo, residue was dried and extd. into CH2Cl2, filtered and crystd. by addn. n-hexane; elem. anal.;	98%

+ potassium tricyanomethanide (34171-69-2) → Ru(NCC(CN)2)(PPh3)2Cp (80659-24-1)

Conditions	Yield
In tetrahydrofuran; methanol (N2); refluxed for 1 h; evapd. (vac.), extd. (CH2Cl2), filtered dropwise into rapidly stirred hexane;	97%
In methanol; dichloromethane under Ar; soln. of KC(CN)3 in MeOH added to soln. of Cp(PPh3)2RuCl in CH2Cl2, stirred at room temp. for 4 h; solvent removed, residue dissolved in CH2Cl2, layered with petroleum ether, recrystn. from 1,2-dichloroethane-petroleum ether; elem. anal.;	88%

N-ethyl-N-butylamine hydrochloride (61278-96-4) + potassium tricyanomethanide (34171-69-2) → N-butyl-N-ethylammonium tricyanomethanide (74908-63-7)

Conditions	Yield
In water	95%

potassium tricyanomethanide (34171-69-2) + silver nitrate → silver(I) tricyanomethanide (36603-81-3)

Conditions	Yield
In water for 12h;	95%
In water
In ethanol; water concd. aq. AgNO3-soln.;

decylamine hydrochloride (143-09-9) + potassium tricyanomethanide (34171-69-2) → N-decylammonium tricyanomethanide (74908-37-5)

Conditions	Yield
In water	94%

potassium tricyanomethanide (34171-69-2) + triethylamine hydrobromide (636-70-4) → triethylammonium tricyanomethanide (94072-39-6)

Conditions	Yield
Stage #1: potassium tricyanomethanide With silver nitrate In water at 20℃; for 1h; Stage #2: triethylamine hydrobromide In water at 20℃; for 2h; Product distribution / selectivity;	94%

1H-imidazole (288-32-4) + nickel(II) nitrate hexahydrate + potassium tricyanomethanide (34171-69-2) → [Ni(C(CN)3)2(C3H4N2)2] (202663-47-6)

Conditions	Yield
In methanol; water stirring (several h); washing (Et2O), drying; elem. anal.;	92%

4-methyl-1H-imidazole (822-36-6) + nickel(II) nitrate hexahydrate + potassium tricyanomethanide (34171-69-2) → [Ni(C(CN)3)2(C3H3N2(CH3))2]

Conditions	Yield
In methanol; water stirring (several h); washing (Et2O), drying; elem. anal.;	90%

Upstream product

• 109-77-3 malononitrile 
• 110-71-4 1,2-dimethoxyethane 
• 151-50-8 potassium cyanide 

Downstream Products

• 66366-62-9 3-amino-2-cyano-3-(ethylmethylamino)propenenitrile 
• 374596-53-9 Re2Cl3(C(CN)3)(μ-dppm)2(CO) 
• 454-50-2 tricyanomethane 
• 68182-80-9 C₂₄H₂₀P⁽¹⁺⁾*C₄N₃^(1-) 
• 25704-06-7 (C₂₀H₈N₄(C₆H₅)4)FeC(CN)3 
• 1254106-81-4 2,5,8-triphenyl-1,3,4,6,7,9-hexaazaphenalene 
• 1217505-33-3 [Ir(tricyanomethanide)(2-phenylpyridine)2(triphenylphosphine)] 
• 497844-58-3 cyclopentadienyl(1,2-bis(diphenylphosphino)ethane)FeC(CN)3 
• 82901-65-3 C₄₄H₃₀CoN₆O₂P₂, blue 

Relevant articles and documents

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