Infrared and ultraviolet spectra of polyphenyl ether and intermediate compounds of the process of synthesis

Pliev, T. N.; Karpov, O. N.; Gordienko, L. L.; Lavrenyuk, T. Ya.

doi:10.1007/bf00617293

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“…FT-IR analysis shows the successful halogen-metal-exchange of 4,4’-dibromobiphenyl in all three cases, according to the absence of ν s (C-Br) at 671 cm -1 and ν as (C-Br) at 760 cm -1 in the EOF-spectra ( Figure 2 ) [ 17 , 18 ]. The signals at 2950 cm -1 indicate an aliphatic substitution of tin, antimony or bismuth as a result of the lithiation with n -butyllithium and therefore residual reactive molecules at the moment of the framework formation.…”

Section: Resultsmentioning

confidence: 99%

New Element Organic Frameworks Based on Sn, Sb, and Bi, with Permanent Porosity and High Catalytic Activity

et al. 2010

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We present new element organic frameworks based on Sn, Sb and Bi atoms connected via organic linkers by element-carbon bonds. The open frameworks are characterized by specific surface areas (BET) of up to 445 m2 g-1 and a good stability under ambient conditions resulting from a highly hydrophobic inner surface. They show good performance as heterogeneous catalysts in the cyanosylilation of benzaldehyde as a test reaction. Due to their catalytic activity, this class of materials might be able to replace common homogeneous element-organic and often highly toxic catalysts especially in the food industry.

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Section: Resultsmentioning

confidence: 99%