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The closed porosity and dense structure of sample has been observed by photograph and the main crystalline phases of the sample using XRD techniques are tricalcium silicate and ettringite.
The structure of the sample is compacting and the porous is independent.
The obtained light-weight thermal insulation materials showed hierarchically porous structure.
Hewlett, LEA'S Chemistry of Cement and Concrete, Arnold Publications, London, 1998
Taylor, Cement Chemistry, Academic Press, London, 1990.

The metal ion is nine-coordinate and connected by oxalate to form 2D honeycomb-like structure.
Structure was solved by direct methods.
Results and Discussion Crystal Structure of Complex 1.
Fig. 1 X-ray single structure for Ho coordination (a) (b) Fig. 2 (a) the approximate regular hexagon of Ho6; (b) the 2D honeycomb-like structure of 1 IR Spectra of the Complex.
Nogueira: Inorganic Chemistry, Vol. 49 (2010) No.7 p.3428.

The experiment results show that the contact angle of the pyrolytic carbon surface amounts to 154º after electrostatic spinning treatment and many porous structures are formed on the fiber film.
In recent years, pile of micro-structures such as nano-fiber, nano-tube and nano-belts have been manufactured via electrostatic spinning method.
Experimental Method Nowadays, there exist two methods for manufacture of super-hydrophobic surface: (1) to texture nano compound structure on the low-energy surface (2) to texture nano-compound structure prior to refining matters with low energy surface.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

Neder2 1Institute of Solid State Chemistry UB RAS, Ekaterinburg 620990, Russian Federation 2Kristallographie und Strukturphysik, Universität Erlangen, Erlangen D-91058, Germany atarakina@ihim.uran.ru, bsecretary@ihim.uran.ru, cbaklanovaY@ihim.uran.ru Keywords: Defect crystal structure, stacking faults, X-ray powder diffraction, Li2SnO3, Li2TiO3, TiO(OH)2, layered double hydroxides.
Moreover, knowledge of the crystal structure of the precursor will help to solve the crystal structure of the new TiO(OH)2 obtained from it.
Crystal structure and stacking fault model for LT-Li2MO3.
Crystal structure of TiO(OH)2.
Solid State Chemistry Vol. 45 (1982), p. 170 [10] G.

Viewed from the structure of P1, it can be look as an interesting PPV with alternating vinylene units with electronwithdrawing group and electrondonating group (Scheme 2).
Song, et al, “Synthesis and Characterization of Polyfluorenevinylene with Cyano Group and Carbazole Unit” Journal of Polymer Science: Part A: Polymer Chemistry, 2009, 6540–6551
Wang, et al, “A Solution-Processible Poly(p-phenylene vinylene) without Alkyl Substitution: Introducing the cis-Vinylene Segments in Polymers Chain for Improved Solubility, Blue Emission, and High Efficiency” Journal of Polymer Science: Part A: Polymer Chemistry, 2008, 5242-5250.

Furthermore, SEM images validate the hexagonal structure of α-HH morphology.
It has the same primary component calcium sulfate but differs in the crystalline structure, molecule arrangement, and water content.
Figure 4 illustrates the TGA study of the water content in the crystal structures of DH and α-HH.
The authors also gratefully acknowledge the Department of Industrial Chemistry for providing research facilities.
Dmitrevskii: Russian journal of applied chemistry, 76 (9) (2003), p. 1408-1413

The dependence of the found properties on the molecular weight, composition and structure of the investigated substances was determined.
Introduction The study of hyperbranched high molecular weight compounds is a promising direction of the polymer chemistry today.
These matters have the unique properties due to the their structure, such as a nanoscale structure, low viscosity, and high sorption ability.
Polymer structure and polymerization mechanism, Macromol.
Barinova, The study of the nitration of hyperbranched polyglycidols, Russian Journal of Applied Chemistry. 92 (2019) 445-452

X-ray diffraction confirms that there are some undesired peaks in YCBC0.1 and YCBC0.5, while the YCBC (x = 0.2-0.4) retains single phase with tetragonal structure.
Zhang et al. has reported that the structure of Ca2+ doped samples had the same layered perovskite structure of parent phase YBaCo2O5+δ and Ca2+ could enhance oxygen desorption property of the samples[14].
The XRD results showed that YCBC0.1 and YCBC0.5 exhibited some impure phases, and the YCBC (x = 0.2-0.4) materials expressed single phase with tetragonal structure after calcined at 1100℃ for 3 h in air.
Journal of Materials Chemistry, 2007, 17:2500-2505
Chinese journal of inorganic chemistry, 2011, 27(12):2362-2366.

A Room Temperature Pre-treatment Process: Ce3+ Doted ZrO2 Nanofilm Coated on the Cold-rolled Plate Surface Chen Cui, Dazhi Wang, Xiangtao Li, Fengzuo Qu, and Tongkuan Xu College of Chemistry & Materials, Dalian polytechnic university, Dalian, 116034, PR China E-mail: qufz@dlpu.edu.cn Keywords：nanometric films, pre-treatment, anti-corrosion, cold-rolled plate Abstract.
This dipping coating process satisfied the energy-saving and green chemistry requirement of modern cold-rolled plate pre-treatment technology.
It was verified that the morphology of the film was brownish and had a finely cracked structure, whilst some brownish powder could be found on its surface, which could attribute to cerium oxide.
The reason is maybe that existence of Ce3+ ions in H2ZrF6 solution enhanced the barrier effect by forming of insoluble CeO2 at the interface, resulting improved the dielectric properties of the insulating silica based cross-linking structure polymer film, which assist in reducing the corrosion rate. [13]It was also suggested that bond formation took place between CeO2 layer and polymer.

Second and fourth derivative profiles of the NIR spectra were used in understanding the chemistry of adsorption of water molecules and the adsorption processes by the samples.
The strong hydrogen bonds between the –OH groups of cellulose molecules can stabilize the cellulose chain into a highly ordered structure through crystalline packing, giving the good strength and insolubility in most solvent.
The strong acids can easily penetrate into amorphous parts, lead to remove the disordered amorphous fractions and leaves the highly crystalline parts, which exhibits a rod or needle-like structure [2].
Compared to cellulose, CNCs have the same chemical structure, but contain less amorphous part, less degree of polymerization and smaller particle size.
The second-derivative profiles as shown in Fig. 3 revealed more structure lying under the peak.