Bis (chlorodicarbonylrodium) is an inorganic compound, a chlorine derivative of the carbonyl complex of rhodium of the composition Rh 2 (CO) 4 Cl 2 , orange-red crystals.
| Bis | |
|---|---|
 | |
| Are common | |
| Systematic name | Bis (Chlorodicarbonyl Rhodium) |
| Traditional names | Bis (μ-chlorodicarbonylrodium) |
| Chem. formula | Rh 2 (CO) 4 Cl 2 |
| Rat formula | [Rh (CO) 2 Cl] 2 |
| Physical properties | |
| condition | orange red crystals |
| Molar mass | 388.76 g / mol |
| Density | 2,708 g / cm³ |
| Thermal properties | |
| T. melt. | 124-125 ° C |
| T. sub. | 140 ° C |
| Classification | |
| Reg. CAS number | 14404-25-2 |
Content
Getting
- Passing carbon monoxide mixed with methanol vapors through rhodium (III) chloride crystalline hydrate:
- {\ displaystyle {\ mathsf {2RhCl_ {3} \ cdot 3H_ {2} O + 6CO \ {\ xrightarrow {120-140 ^ {o} C}} \ [Rh (CO) _ {2} Cl] _ {2 } + 6H_ {2} O + 2COCl_ {2}}}}
Physical Properties
Bis (chlorodicarbonylrodium) forms orange-red crystals of tetragonal syngony , space group I 4 2d , cell parameters a = 1.4279 nm, c = 0.9353 nm, Z = 8, [1] .
It is steady in air, in the presence of moisture they undergo hydrolysis.
It is well soluble in benzene , dichloromethane , poorly soluble in petroleum ether .
Sublimates at a temperature of 140 ° C in an atmosphere of carbon monoxide .
Application
- Olefin isomerization catalyst .
Notes
- ↑ L. Walz, P. Scheer. Structure of di-μ-chlorobis [dicarbonylrhodium (I)] // Acta Cryst .. - 1991. - T. C47 , No. 3 . - S. 640-641 . - DOI : 10.1107 / S0108270190009404 .
Literature
- Inorganic Synthesis Guide: 6 Vol. / Ed. Brower G. - M .: Mir, 1986 .-- T. 6 .-- 360 p.
- Chemical Encyclopedic Dictionary / Editorial: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1983. - 792 p.