2,6-Dimethylphenol derived H-phosphonate and α-hydroxyphosphonate: facile synthesis, crystal chemistry, supramolecular association and metal complexation

CrystEngComm ◽  
2015 ◽  
Vol 17 (23) ◽  
pp. 4355-4366 ◽  
Author(s):  
Sazzat Hossain ◽  
Sandeep K. Gupta ◽  
Ramaswamy Murugavel
Keyword(s):  
Crystal Chemistry ◽  
Metal Complexation ◽  
Aggregation Behavior ◽  
Facile Synthesis ◽  
Oh Groups

A H-phosphonate and an α-hydroxyarylphosphonate with active P–H and P–OH groups have been synthesized from 2,6-dimethylphenol and their aggregation behavior has been investigated.

Crystal chemistry of lamprophyllite-group minerals from the Murun alkaline complex (Russia) and pegmatites of Rocky Boy and Gordon Butte (USA): single crystal X-ray diffraction and Raman spectroscopy study

2021 ◽  
Vol 77 (2) ◽  
Author(s):  
Sergey M. Aksenov ◽  
Anastasia D. Ryanskaya ◽  
Yuliya V. Shchapova ◽  
Nikita V. Chukanov ◽  
Nikolay V. Vladykin ◽  
...  
Keyword(s):  
Solid Solution ◽  
Single Crystal ◽  
Raman Spectra ◽  
Crystal Chemistry ◽  
Solid Solution Series ◽  
X Ray Diffraction ◽  
Alkaline Complex ◽  
Oh Groups ◽  
X Ray ◽  
Solution Series

Specific features of the crystal chemistry of lamprophyllite-group minerals (LGMs) are discussed using the available literature data and the results of the single-crystal X-ray diffraction and a Raman spectroscopic studies of several samples taken from the Murun alkaline complex (Russia), and Rocky Boy and Gordon Butte pegmatites (USA) presented here. The studied samples are unique in their chemical features and the distribution of cations over structural sites. In particular, the sample from the Gordon Butte pegmatite is a member of the barytolamprophyllite–emmerichite solid solution series, whereas the samples from the Murun alkaline complex and from the Rocky Boy pegmatite are intermediate members of the solid solution series formed by lamprophyllite and a hypothetical Sr analogue of emmerichite. The predominance of O2− over OH− and F− at the X site is a specific feature of sample Cha-192 from the Murun alkaline complex. New data on the Raman spectra of LGMs obtained in this work show that the wavenumbers of the O—H stretching vibrations depend on the occupancies of the M2 and M3 sites coordinating with (OH)− groups. Cations other than Na+ and Ti4+ (mainly, Mg and Fe3+) can play a significant role in the coordination of the X site occupied by (OH)−. Data on polarized Raman spectra of an oriented sample indicate that the OH groups having different local coordinations have similar orientations with respect to the crystal. The calculated measures of similarity (Δ) for lamprophyllite and ericssonite are identical (0.157 and 0.077 for the 2M- and 2O-polytypes, respectively), which indicates that these minerals are crystal-chemically isotypic and probably should be considered within the same mineral group by analogy to the other mineralogical groups which combine isotypic minerals.

scholarly journals Facile Synthesis of Potassium-Doped Titanium Oxide Nanostructure (KTiOxs)/AlO(OH) Composites for Enhanced Photocatalytic Performance

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 548
Author(s):  
So Yoon Lee ◽  
Tatsuya Matsubara ◽  
Daiki Numata ◽  
Ai Serizawa
Keyword(s):  
Titanium Oxide ◽  
Photocatalytic Performance ◽  
Functional Materials ◽  
Industrial Applications ◽  
Coating Process ◽  
Facile Synthesis ◽  
Water And Wastewater Treatment ◽  
Oh Groups ◽  
Solution Treated ◽  
Water And Wastewater

Generally, nanoparticles (NPs) are used as photocatalysts, which sometimes results in difficulties in the separation and recycling of photocatalysts from suspensions after their application in water and wastewater treatment, which hinders industrial applications of NPs that are too fine to be removed by gravitational settling. This can be solved by using support NPs to overcome these problems. -OH enrich AlO(OH), which is produced by a steam coating process, has been could be used as a possible support, because the -OH groups on the surface can interact with foreign molecules; thus, various composite functional materials can be prepared. Potassium doped titanium oxide NPs, which are produced by a wet corrosion process, namely KTiOxs, have been selected as photocatalysts, because KTiOxs have sufficient K+ ions, thereby expecting the chemical bonding with -OH group from AlO(OH). This study fabricated a novel photocataysis system made by combining KTiOxs as catalysts and AlO(OH) as the catalysts’ support, namely KTiOxs/AlO(OH) composites. The KTiOxs nanowires, obtained from 10 mol/L of a KOH solution treated with Ti and AlO(OH) at 280 °C for 24 h through a steam coating process, yielded the highest surface area and the highest photocatalytic performance.

Facile synthesis of an eco-friendly nitrogen–phosphorus ammonium salt to enhance the durability and flame retardancy of cotton

2017 ◽  
Vol 5 (20) ◽  
pp. 9970-9981 ◽  
Author(s):  
Yaling Jia ◽  
Yi Lu ◽  
Guangxian Zhang ◽  
Yaojia Liang ◽  
Fengxiu Zhang
Keyword(s):  
Flame Retardant ◽  
Ammonium Salt ◽  
Flame Retardancy ◽  
Cotton Fibers ◽  
Facile Synthesis ◽  
Oh Groups ◽  
Nitrogen Phosphorus

An eco-friendly AEGDP flame retardant reacted with –OH groups from cotton to enhance the durability and flame retardancy of cotton fibers.

Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

2019 ◽  
Vol 14 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Weihua Meng ◽  
Weihong Wu ◽  
Weiwei Zhang ◽  
Luyao Cheng ◽  
Yunhong Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tin Oxide ◽  
Three Dimensional ◽  
Facile Synthesis

Selective Degradation of Grindelic Acid and Its 3α-Hydroxy Analog: Facile Synthesis of Grindelistrictic Acids and Potential Intermediates for Erigerol

Synlett ◽  
1991 ◽  
Vol 1991 (09) ◽  
pp. 725-727 ◽  
Author(s):  
Takeshi Shimizu ◽  
Sayoko Hiranuma ◽  
Zhao-hui Qian ◽  
Hirosuke Yoshioka
Keyword(s):  
Facile Synthesis ◽  
Selective Degradation

Crystal chemistry and stability relations in the system MgCO3–NiCO3*

1971 ◽  
Vol 133 (133) ◽  
pp. 432-444 ◽  
Author(s):  
Alan M. Gaines ◽  
Julian R. Goldsmith
Keyword(s):  
Crystal Chemistry
Sign in / Sign up

Export Citation Format

Share Document