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12249-22-8

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12249-22-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 12249-22-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,2,4 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12249-22:
(7*1)+(6*2)+(5*2)+(4*4)+(3*9)+(2*2)+(1*2)=78
78 % 10 = 8
So 12249-22-8 is a valid CAS Registry Number.

12249-22-8Relevant articles and documents

Hydrogen-bonded Adducts of Ferrocene-1,1'-diylbis(diphenylmethanol): Crystal and Molecular Structures of Adducts with Methanol (1:1) and Pyridine (1:2)

Ferguson, George,Gallagher, John F.,Glidewell, Christopher,Zakaria, Choudhury M.

, p. 3499 - 3506 (1993)

Ferrocene-1,1'-diylbis(diphenylmethanol), , forms hydrogen-bonded host-guest adducts with a wide range of hydrogen-bond donors and acceptors.Adducts with a diol:guest ratio of 1:1 were formed by MeOH, EtOH, Me2SO, Me2NCHO, piperazine, and 4,4'-bipyridyl and 1:2 adducts by Me2SO, dioxane, pyridine and piperidine.The 1:1 adduct with MeOH has been shown to be triclinic, space group P with a = 8.7624(3), b = 12.2797(6), c = 14.8773(8) Angstroem, α = 106.572(4), β = 97.879(4), γ = 100.873(4) deg with a final R of 0.044 for 4982 observed reflections.The structure consists of a centrosymmetric assembly of two molecules of diol and two molecules of the guest MeOH, hydrogen bonded together to form a chair conformation (OH)6 ring.The 1:2 adduct with pyridine has been shown to be monoclinic, space group C2/c with a = 16.6252(10), b = 11.1016(9), c = 20.9440(16) Angstroem, β = 107.855(6) deg with a final R of 0.042 for 3260 observed reflections.In the structure the diol lies on a two-fold rotation axis with its hydroxyl hydrogens disordered and participating in both intramolecular O-H...O and intermolecular O-H...N hydrogen bonding with the two pyridine guest molecules.

Hydrogen-bonded adducts of ferrocene-1,1'-diylbis(diphenylmethanol) with nitrogenous bases: crystal and molecular structure of the 2:1 adduct with hexamethylenetetramine

Ferguson, George,Glidewell, Christopher,Lewis, Arwel,Zakaria, Choudhury M.

, p. 229 - 234 (2007/10/02)

Ferrocene-1,1'-diylbis(diphenylmethanol), forms hydrogen-bonded host-guest adducts with nitrogenous bases.A 2:1 adduct is formed with hexamethylenetetramine, , 1:1 adducts with 1,4-dimethylpiperazine and 1,4-diazabicyclooctane and a 1:2 adduct with 3-pyridylferrocene.The crystal structure of the hexamethylenetetramine adduct has been determined.The structural unit contains two molecules of the host ferrocenediol and one molecule of the guest; the diol forms both intramolecular O-H...O and intermolecular O-H...N hydrogen bonds, but two of the four nitrogen atoms in the guest molecules play no part in the hydrogen bonding.Keywords: Iron; Ferrocene; Host-guest adducts; Hydrogen bonding; Crystal structure

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