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hexacarbonyl-μ-{(1,2,2α-η3:3,3α,4-η3)-2,3-bis(methylene)-1,4-butadienyl}-diiron is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18662-05-0

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18662-05-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18662-05-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,6 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18662-05:
(7*1)+(6*8)+(5*6)+(4*6)+(3*2)+(2*0)+(1*5)=120
120 % 10 = 0
So 18662-05-0 is a valid CAS Registry Number.

18662-05-0Relevant academic research and scientific papers

Organic Syntheses via Transition Metal Complexes, 18. - A Novel Type of Carbonyl Olefination by Means of Allenes via a Template-Induced Formation of (Trimethylenemethane)tricarbonyliron Complexes

Aumann, Rudolf,Melchers, Hans-Dieter,Weidenhaupt, Hermann-Josef

, p. 17 - 22 (2007/10/02)

On photolysis in the presence of Fe(Co)5 allenes and aldehydes give (trimethylenemethane)tricarbonyliron complexes 5 and 5'.The reaction is highly stereospecific and involves the intermediate formation of ?-allyl-?-complexes, which spontaneously eliminate CO2 to give 5 and 5'.To our knowledge, this is the first example of a carbonyl olefination by means of a quarternary carbon of a cumulene.The trimethylenemethane ligand of 5 may be isomerised at 180 deg C without decomposition via rotation of substituents around the C=C bonds.

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