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27499-64-5

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27499-64-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27499-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,4,9 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 27499-64:
(7*2)+(6*7)+(5*4)+(4*9)+(3*9)+(2*6)+(1*4)=155
155 % 10 = 5
So 27499-64-5 is a valid CAS Registry Number.

27499-64-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name bis(2-ethynylphenyl)ethyne

1.2 Other means of identification

Product number -
Other names o-bis(ethynyl)tolane

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:27499-64-5 SDS

27499-64-5Relevant academic research and scientific papers

Highly phosphorescent organopalladium(ii) complexes with metal-metal-to-ligand charge-transfer excited states in fluid solutions

Lin, Jinqiang,Zou, Chao,Zhang, Xiaobao,Gao, Qin,Suo, Sa,Zhuo, Qihang,Chang, Xiaoyong,Xie, Mo,Lu, Wei

, p. 10417 - 10421 (2019)

Dinuclear pincer-type cyclometalated Pd(ii) complexes with foldable diacetylide ligands show crystallographically determined intramolecular Pd?Pd contacts of 3.203-3.380 ?. In deoxygenated fluid solutions, these Pd(ii) complexes are highly phosphorescent

Sulfoxide-Induced Homochiral Folding of ortho-Phenylene Ethynylenes (o-OPEs) by Silver(I) Templating: Structure and Chiroptical Properties

Resa, Sandra,Miguel, Delia,Guisán-Ceinos, Santiago,Mazzeo, Giuseppe,Choquesillo-Lazarte, Duane,Abbate, Sergio,Crovetto, Luis,Cárdenas, Diego J.,Carre?o, M. Carmen,Ribagorda, María,Longhi, Giovanna,Mota, Antonio J.,álvarez de Cienfuegos, Luis,Cuerva, Juan M.

, p. 2653 - 2662 (2018/02/06)

A new family of homochiral silver complexes based on carbophilic interactions with ortho-phenylene ethynylene (o-OPE) scaffolds containing up to two silver atoms are described. These compounds represent a unique class of complexes with chirality at the me

Chirality Sensing with Stereodynamic Biphenolate Zinc Complexes

Bentley, Keith W.,De Los Santos, Zeus A.,Weiss, Mary J.,Wolf, Christian

, p. 700 - 707 (2015/10/12)

Two bidentate ligands consisting of a fluxional polyarylacetylene framework with terminal phenol groups were synthesized. Reaction with diethylzinc gives stereodynamic complexes that undergo distinct asymmetric transformation of the first kind upon binding of chiral amines and amino alcohols. The substrate-to-ligand chirality imprinting at the zinc coordination sphere results in characteristic circular dichroism signals that can be used for direct enantiomeric excess (ee) analysis. This chemosensing approach bears potential for high-throughput ee screening with small sample amounts and reduced solvent waste compared to traditional high-performance liquid chromatography methods. Chirality 27:700-707, 2015.

(η6-[7]Heliphene)tricarbonylchromium via an Optimized Preparation of [7]Heliphene

Holmes, Daniel,Lee, Sang Yeul,Lotz, Sabine D.,Nguyen, Son C.,Schaller, Gaston R.,Schmidt-Radde, Rachel H.,Vollhardt, K. Peter C.

, p. 2038 - 2054 (2015/07/15)

Optimized procedures to [7]heliphene are described that allowed the synthesis of (η6-[7]heliphene)tricarbonylchromium and a preliminary exploration of its chemical behavior. DFT calculations provide structural and energetic information on this complex and its haptomeric isomers. Attempts to prepare the corresponding ([7]heliphene)chromium sandwich failed so far, but DFT evidence is presented to indicate that the target should be accessible.

Syntheses, optical properties and photoactivated insecticidal activities of cyclic arylethynylsilanes

Shao, Guang,Li, Yong,Yu, Huijuan,He, Ting,Jiang, Dingxin

, p. 278 - 282 (2012/01/05)

Syntheses and optical properties of cyclic arylethynylsilanes containing one or two trialkyne pockets were described. Optical properties such as UV-vis spectra, photoluminescence and quantum yield based on these conjugated structural features were compare

Synthesis and spectroscopic study of silacyclyne-substituted phenyleneethynylenes

Mao, Guoliang,Orita, Akihiro,Matsuo, Daisuke,Hirate, Takayoshi,Iwanaga, Tetsuo,Toyota, Shinji,Otera, Junzo

supporting information; experimental part, p. 2860 - 2864 (2009/09/06)

A series of 1,1-dimethyl-4,5:8,9-dibenzo-1-silacycloundeca-4,8-diene-2,6,10-triyne (DST)-substituted phenyleneethynylenes were successfully synthesized by reaction of Me2SiCl2 with dimagnesium dianions which had been prepared from 2,

Radical cascade transformations of tris(o-aryleneethynylenes) into substituted benzo[a]indeno[2,1-c]fluorenes

Alabugin, Igor V.,Gilmore, Kerry,Patil, Satish,Manoharan, Mariappan,Kovalenko, Serguei V.,Clark, Ronald J.,Ghiviriga, Ion

supporting information; experimental part, p. 11535 - 11545 (2009/02/03)

Oligomeric o-aryleneethynylenes with three triple bonds undergo cascade radical transformations in reaction with a Bu3SnH/AIBN system. These cascades involve three consecutive cycle closures with the formation of substituted benzo[a]indeno[2,1-c]fluorene or benzo[1,2]fluoreno[4,3-b]silole derivatives. The success of this sequence depends on regioselectivity of the initial attack of the Bu3Sn radical at the central triple bond of the o-aryleneethynylene moiety. The cascade is propagated through the sequence of 5-exo-dig and 6-exo-dig cyclizations which is followed by either a radical attack at the terminal Ar substituent or radical transposition which involves H-abstraction from the terminal TMS group and 5-endo-trig cyclization. Overall, the transformation has potential to be developed into an approach to a new type of graphite ribbons.

A SHORT ROUTE TO DEHYDRO ANNULENES

Huynh, Chanh,Linstrumelle, Gerard

, p. 6337 - 6344 (2007/10/02)

A novel synthesis of dehydro annulenes from 1,2-dibromobenzene is based on selective Pd(0)-Cu(1) coupling reactions of aryl and vinyl halides with terminal acetylenes.

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