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4729-01-5

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4729-01-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4729-01-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,2 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4729-01:
(6*4)+(5*7)+(4*2)+(3*9)+(2*0)+(1*1)=95
95 % 10 = 5
So 4729-01-5 is a valid CAS Registry Number.

4729-01-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name cyclopentadienylidene anion radical

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:4729-01-5 SDS

4729-01-5Relevant articles and documents

DIRECT IR-SPECTROSCOPIC OBSERVATION OF (1+2)-CYCLOADDITION OF CYCLOPENTADIENYLIDENE TO ETHYLENE IN ARGON MATRIX

Nefedov, Oleg M.,Zuev, Petr S.,Maltsev, Andrey K.,Tomilov, Yuri V.

, p. 763 - 764 (1989)

Cyclopentadienylidene was generated in argon matrix doped with 2percent C2H4 and the direct reaction of the carbene with C2H4 in matrix, when it was annealing from 12 to 40-45 K, was observed.

Photochemistry of matrix-isolated cyclopentadienylidene revisited

Maier,Endres

, p. 179 - 187 (2007/10/03)

Irradiation of diazocyclopentadiene (1) in a matrix at 10 K with the wavelength λ = 366 nm leads - as already known - to rapid loss of nitrogen and the formation of cyclopentadienylidene (T-2). Upon photoexcitation of cyclopentadienylidene (2) with light of the wavelength λ = 313 nm the (s-E)-(E)-conformer of 2-penten-4-yn-1-ylidene (T-7a) can be detected, which is effectively converted into 3-ethynylcyclopropene (6) by using light with a wavelength of λ = 436 nm. The structural elucidation of T-7a and 6 is based on the comparison of the experimental and calculated IR spectra. Irradiation of cyclopentadienylidene (2), isolated together with the eliminated nitrogen in the same matrix cage, with light of wavelengths longer than 570 nm initiates a partial back-reaction to the starting material, diazocyclopentadiene (1) by recapturing the evolved nitrogen molecule.

Cyclopentadienylidene. A Matrix Isolation Study Exploiting Photolysis with Unpolarized and Plane-Polarized Light

Baird, Mark S.,Dunkin, Ian R.,Hacker, Nigel,Poliakoff, Martyn,Turner, James J.

, p. 5190 - 5195 (2007/10/02)

Diazocyclopentadiene (1) was photolyzed in N2, CO, and other low-temperature matrices.The resulting carbene, cyclopentadienylidene (2), was characterized by its UV and IR spectra, and its thermal dimerization and reaction with CO were observed.Photolysis of 1 with plane-polarized light gave matrices exhibiting linear dichroism.Comparison of dichroic IR and UV spectra revealed that the photolysis proceeds via an excited A1 state of the diazo compound.Plane-polarized irradiation of the corresponding ketene (4) in CO matrices resulted in photoreorientation of the molecules of 4 without significant loss.

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