19227-70-4

Basic information

• Product Name: Guanidine Hydroiodide
• Synonyms: Guanidine Hydroiodide;carbamimidoylazanium:iodide
• CAS NO: 19227-70-4
• Molecular Formula: CH₆N₃*I
• Molecular Weight: 186.98291
• EINECS: -0
• Mol File: 19227-70-4.mol
• Article Data: 6

Chemical Properties

• Melting Point: 194.0 to 198.0 °C
• Appearance: /
• Water Solubility: Soluble in water
• CAS DataBase Reference: Guanidine Hydroiodide(CAS DataBase Reference)
• NIST Chemistry Reference: Guanidine Hydroiodide(19227-70-4)
• EPA Substance Registry System: Guanidine Hydroiodide(19227-70-4)

Safety Data

• Statements: 22-36/37/38
• Safety Statements: 26
• Hazardous Substances Data: 19227-70-4(Hazardous Substances Data)

Usage

Description

Guanidine Hydroiodide, also known as guanidinium iodide (GI), is a compound that has demonstrated significant enhancement in carrier lifetimes and open-circuit voltages in hybrid organic-inorganic perovskite solar cells. Its hydrogen bonding capability allows for effective passivation of under-coordinated iodine species located at grain boundaries, both at the surface and internally within the bulk.

Uses

Used in Solar Cell Applications:
Guanidine Hydroiodide is used as an additive in hybrid organic-inorganic perovskite solar cells for enhancing carrier lifetimes and open-circuit voltages. This is due to the hydrogen bonding capability of the GI molecule, which allows for effective passivation of under-coordinated iodine species located at grain boundaries.
Used in Photovoltaic Applications:
Guanidine Hydroiodide is used as a precursor for the fabrication of perovskites for photovoltaic applications. Organohalide-based perovskites have emerged as an important class of material for solar cell applications, and the use of GI-based additives has been shown to optimize the band gap, carrier diffusion length, and power conversion efficiency of perovskite-based solar cells.

Upstream product

• 30738-99-9 thiourea 
• 506-78-5 cyanogen iodide 
• 7664-41-7 ammonia 
• 50-01-1 guanidine hydrochloride 
• 593-85-1 diguanidine carbonate 

Relevant articles and documents

Orthoamides and Iminium salts, CIII. Synthesis of N,N′,N′′-persubstituted guanidinium salt-based ionic liquids by anion metathesis

N,N′,N′′-peralkylated guanidinium chlorides and N,N′,N′′-peralkylated guanidines were prepared from N,N′-peralkylated chloroformamidinium chlorides. The alkylation of the guanidines affords N,N′,N′′-persubstituted guanidinium chlorides bromides, iodides,

Efficient Catalysts of Acyclic Guanidinium Iodide for the Synthesis of Cyclic Carbonates from Carbon Dioxide and Epoxides under Mild Conditions

We have studied the synthesis of five-membered cyclic carbonates through the cycloaddition of CO 2 to epoxides by using acyclic guanidinium salts. We have found that the cycloaddition reactions proceed smoothly at ordinary temperatures and pressures and result in good yields when acyclic guanidinium iodides are employed as catalysts. Both cation moiety and anion moiety of the guanidinium salts play important roles in their catalytic activity. It is essential to have active hydrogens on the cation moiety as well as an iodide ion as the anion moiety so as to achieve good catalytic activity. Guanidinium iodides with three or more active hydrogens give cyclic carbonates in high yields in polar solvents such as 1-methylpyrrolidin-2-one, whereas the guanidinium iodides with one or two active hydrogens show good catalytic activity in less polar solvents such as 2-methyltetrahydrofuran.

IMIDAZOLYL ALKYL GUANIDINE DERIVATIVES, PROCESSES FOR THEIR PREPARATION AND PHARMACEUTICAL PREPARATIONS CONTAINING THESE COMPOUNDS

New imidazolylalkyl-guanidine derivatives are described, which by virtue of their agonistic action on histamine-H 2 receptors and in part also due to their additional H 1-antagonistic receptor activity can be used in the treatment of cardiac diseases, certain forms of hypertension and diseases of arterial occlusion.These imidazolylalkyl-guanidine derivatives correspond to the general formula I: STR1