13963-58-1 → HCID 11125012, compound

HRID 466958Notes

Reaction equation

HRID 466958 reaction equation
[Cl-].[Zn+2:2].[Cl-].[C-:4]#[N:5].[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[Co:16]>O>[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[C-:4]#[N:5].[Co+3:16].[Co+3:16].[Zn+2:2].[Zn+2:2].[Zn+2:2]

Participants

4

Reactant 2

HCID 40733413963-58-12×HCID 3007855Zincchloride2×

Product 1

HCID 11125012HCID 11125012, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

This example demonstrates the preparation of a double metal cyanide complex catalyst using the process of this invention. A solution of zinc chloride (26.65 g; 0.1956 mole) in water (26.65 g) was added rapidly to a well-agitated solution of potassium hexacyanocobaltate (13.00 g, 0.0391 mole) in water (263.35 g). The potassium hexacyanocobaltate solution was maintained at 40° C. during addition of the zinc chloride solution. A colorless precipitate of zinc hexacyanocobaltate particles formed immediately upon addition. After stirring for 15 minutes at 40° C., dimethoxyethane (84.00 g; 0.9321 mole) was added to the aqueous catalyst slurry. The resulting mixture was stirred for an additional 30 minutes and the zinc hexacyanocobaltate zinc chloride.dimethoxyethane.water complex catalyst recovered by filtration using a horizontal basket centrifugal filter and a light weight nylon fabric filter medium. The filtration rate was relatively fast with minimal clogging of the pores of the filter medium. After washing with 300 mL dimethoxyethane and drying in air at ambient temperature and pressure, the filter cake obtained was quite soft and could be easily crushed to a fine powder.

Workup

  1. customthe preparation of a double metal cyanide complex catalyst

Sources & evidence

ORD record
ord-b1d8f4f00fee4a1392dc6b5e0299ee3e
Source dataset
uspto-grants-1992_10
Patent number
US05158922

Reaction notes

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