13820-78-5

Basic information

• Product Name: tetraammine(chloroaquo)cobalt(III)
• Synonyms: tetraammine(chloroaquo)cobalt(III)
• CAS NO: 13820-78-5
• Molecular Formula: Cl3CoH14N4O
• Molecular Weight: 251.42956
• Mol File: 13820-78-5.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• Vapor Pressure: 5990mmHg at 25°C
• CAS DataBase Reference: tetraammine(chloroaquo)cobalt(III)(CAS DataBase Reference)
• NIST Chemistry Reference: tetraammine(chloroaquo)cobalt(III)(13820-78-5)
• EPA Substance Registry System: tetraammine(chloroaquo)cobalt(III)(13820-78-5)

Safety Data

• Hazardous Substances Data: 13820-78-5(Hazardous Substances Data)

Usage

InChI:InChI=1/3ClH.Co.4H3N.H2O/h3*1H;;4*1H3;1H2/q;;;+3;;;;;/p-3

Upstream product

• 7647-01-0 hydrogenchloride 
• 13820-61-6 trans-dichlorotetramminecobalt(III) chloride * H2O 

Downstream Products

• 13820-61-6 cis-[Co(NH3)4Cl2]Cl*H2O 

Relevant articles and documents

Classic coordination complexes: The kinetics and stereochemistry of acid hydrolysis of cis- and trans-[Co(NH3)4Cl2]+

The kinetics and stereochemistry of acid hydrolysis of the classic complexes cis- and trans-[Co(NH3)4Cl2]+ have been determined. They hydrolyse at virtually the same rate, 2.4 × 10-3 s-1 and 2.2 × 10-3 s-1 for the cis and trans ions, respectively, (0.02 M HClO4, 25 °C). The 'immeasurably fast' hydrolysis of the cis isomer has been dismissed as a myth. The trans-[Co(NH3)4(OH2)Cl]2+ isomer has been isolated for the first time, and the trans/cis isomerisation equilibration rate measured, again remarkably at virtually the same rate, 2.3 × 10-3 s-1. The cis isomer is the more stable at equilibrium, 88%. The steric course of substitution has been determined as 55% cis product for the cis-dichloro reactant and 35% cis for the trans reactant. The kinetic and equilibrium data are compared to that for the well-studied [Co(en)2Cl2]+ system, and the synthetic chemistry for the simpler tetraammine systems is elaborated.