Khan, Muhammad S.; Al-Mandhary, Muna R. A.; Al-Suti, Mohammed K.; Corcoran, Timothy C.; Al-Mahrooqi, Yaqoub; Attfield, J. Paul; Feeder, Neil; David, William I. F.; Shankland, Kenneth; Friend, Richard H.; Koehler, Anna; Marseglia, Elisabeth A.; Tedesco, Emilio; Tang, Chiu C.; Raithby, Paul R.; Collings, Jonathan C.; Roscoe, Karl P.; Batsanov, Andrei S.; Stimson, Lorna M.; Marder, Todd B. published an article on January 31 ,2003. The article was titled 《Synthesis and optical characterisation of platinum(II) poly-yne polymers incorporating substituted 1,4-diethynylbenzene derivatives and an investigation of the intermolecular interactions in the diethynylbenzene molecular precursors》, and you may find the article in New Journal of Chemistry.Name: 1,4-Diethynyl-2,5-dimethoxybenzene The information in the text is summarized as follows:
A series of 1,4-diethynylbenzene derivatives, H-CC-R-CC-H with R = C6H3NH2 (I), C6H3F (II), C6H2F2-2,5 (III), C6F4 (IV), C6H2(OMe)2-2,5 (V) and C6H2(OC8H17-n)2-2,5 (VI) were synthesized and their crystal structures were determined by single crystal (I, II, III, IV) or powder (V, VI) x-ray diffraction. The CCH···πCC hydrogen bonds dominating structure H-CC-R-CC-H are gradually replaced by CC-H···F ones with the increase of fluorination (II → IV), or completely replaced by CCH···N and NH···πCC bonds in I, and CCH···O in V and VI. The related platinum-based polymers, trans-[-Pt(PnBu3)2-CC-R-CC-]n (R = as above and C6H4,) were prepared and characterized by spectroscopic methods and thermogravimetry, which show that the amino and methoxy derivatives have lowest thermal stability whereas the fluorinated ones exhibit increasing thermal stability with increasing fluorination. Optical spectroscopic measurements reveal that substituents on the aromatic spacer group do not create strong donor-acceptor interactions along the rigid backbone of the organometallic polymers. In addition to this study using 1,4-Diethynyl-2,5-dimethoxybenzene, there are many other studies that have used 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Name: 1,4-Diethynyl-2,5-dimethoxybenzene) was used in this study.
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Name: 1,4-Diethynyl-2,5-dimethoxybenzene They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem