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The result, shows that the sample has cubic perovskite structure with the existence of impurities phase.
The cubic structure has “a” = 3.8968 Å (space group Pm-3m) and volume of 59.17Å3 .
This findings are almost similar with the structure result reported for La0.4Ba0.6Mn0.4Ti0.6O3 sample [13].
Rao, Journal of Solid State Chemistry. 120 (1995) 204
Ganguli, Journal of Solid State Chemistry, 177 (2004) 2881

Synthesis of Composite Zn2SnO4/SnO2 as Photocatalyst Materials by Means of Sonochemical Treatment and its Electronic Structure Bambang Prijamboedi*, An Niza El Aisnada and Wahyu Orphan Kuswantoro Inorganic and Physical Chemistry Research Div., Fac. of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl.
Electronic structures of (a).
The electronic structures were calculated for the optimized crystal structure.
Material Chemistry A 4 (2016) 10691-10699 [2] K.
Material Chemistry C 2 (2014) 8381-8387 [5] X.

Structure of rhombohedral phase of Bismuth Sodium Titanate (Bi0.5 Na0.5)TiO3.
In this study, we took a conventional cell (hexagonal) with 30 atoms per cell; the crystal structure is shown in Figure 1.
The whole structure was optimized (the volume, c/a ratio and the atomics coordinates).
a (Å) c (Å) Experimental [11] 5.48 13.51 Present work 5.68 14.03 Other work [20] 5.359 13.27 Electronic Structure After the relaxation of the structure, we calculate the band structure along the high symmetry point in the Brillouin zone shown in Figure 2.
Electronic band structure.

Figure 1 shows the structure of α-MPc(OC5H11)4.
Structure of α-pentyloxy Fig. 2.
References [1] Zhang et al. / International Journal of Quantum Chemistry 107 (2007) 952-961 [2] S.E.
Saka et al. / Journal of Organometallic Chemistry 696 (2011) 913-924 [4] Yanli Chen et al. / Langmuir 21 (2005) 11289-11295 [5] R.
Bayrak et al. / Journal of Organometallic Chemistry 696 (2011) 3807-3815 [6] D.

Gelification effects on the structure and birefringence of charge transfer complex terthiophene bisililated - TCNQ hybrid materials N.
The synthetic methods based on a molecular chemistry approached, and most of the sol-gels thin film organic materials are prepared by solid-state reaction [1-3].
In other side the parabola peaks by distance of 4.4 Å showed an organisation structure of Si…Si of TMOS.
The peak with distance more than 11.4 Å showed that there is an organization in solid as lamellar structure, which formed between precursors of 2,5''bis(trimethoxysilyl)terthiophene/ TCNQ and TMOS (by ratio of 1 : 1 : 4).
Chapter 20 in the Chemistry of Organic Silicon Compounds; Wiley, New York, 1989

Introduction Graphene oxide (GO) possess a unique structure containing both aromatic (sp2) and aliphatic (sp3) domains of carbon atoms [1].
Zettl, "Determination of the local chemical structure of graphene oxide and reduced graphene oxide," Advanced materials, vol. 22, no. 40, pp. 4467-4472, 2010
Gao, "The chemistry of graphene oxide," Graphene oxide: reduction recipes, spectroscopy, and applications, pp. 61-95, 2015
Demoustier-Champagne, "Chemical synthesis of polypyrrole: structure–properties relationship," Synthetic metals, vol. 98, no. 2, pp. 113-122, 1998
Neta, "Redox chemistry of bipyrroles: Further insights into the oxidative polymerization mechanism of pyrrole and oligopyrroles," The Journal of Physical Chemistry B, vol. 101, no. 29, pp. 5698-5706, 1997

Rail gas press welding is a sophisticated process which involves physics, chemistry, heat transfer, material metallurgy and hydromechanics and other subjects concerned.
In order to gain a fine welding structure, one must design the craft plan properly and scientifically.
The performance of exothermic welding is also unsatisfactory because of its casting-structured connection parts.
Gas welding is a sophisticated chemistry and physics process.
The shape, structure and temperature contribution of welding blaze is mainly determined by combustion ratio as showed in Expression (1).

It also retains the original structures and state of the material.
The particle size and the crystalline structure of the product samples were detected by means of X-ray analysis with a BD-86 diffractometer(Japan) and Mastersizer 2000 Laser grain-size analysis meter(England).
It proves that doped iron inhibited mutation of TiO2,at the same time,there isn't the Fe3+ diffraction peak on the X-ray diffraction patterns,which shows Fe3+ has entered into the structure of TiO2.
Acta Energiae Solaris Sinica,2005,26(1),39 [5]Xu rui-feng, Xu xiu-yan,Fu guo-zhu,Antimicrobial Property of Nano-TiO2 in Coatings.Journal of Beijing University of Chemical Technology,2002,29(5),45 [6]Huang li-hua,Zhao Feng.Studies on Photodegrdation of Direct Blue on Nanosized Titania.Environmental Chemistry,2003,22(4),359 [7]Xiong Yu-hua,Li Feng-yi.Photodegradation of Polyethelene Films Catalyzed by TiO2.Chinese Journal of Applied Chemistry,2005,22(5),534 [8]Zhang jun-ping,Wang yan.Photocatalytic Behavior of TiO2 Doped with Eu,Ce,Y Ions.Journal of the Chinese Society of Rare Earths (in Chin), 2002,20(5),478 [9]Yue Ling-hai,Shui Miao,XU Zhu-de, The Thermal Analysis,Crystal Growth and Structure Transformation of Nano-scale TiO2 Prepared by TiCl4 Hydrolysis.Chinese Journal of Inorganic Chemistry, 2000, 16(5), 793 [10]Wang Zheng-xin,Ding Shi-wen,Zhang Mei-hong.Synthesis Structure and Photocatalysis of Nano-TiO2 Mixed Crystals.Chinese Journal of Inorganic Chemistry,2005,21 (3),437

The morphology and structure of the coating was observed and analyzed by SEM.
The layered structure of Mg(OH)2,which facilitates easy basal cleavage, and a P-B ratio of 1.77, which generates compressive internal stress, lead to cracking and curling of the Mg(OH)2 film formed on Mg [6].
The morphology and structure of the coating was observed and analyzed by SEM.
(3) The chemical transformation film was compact structure, smooth, uniform distribution.
[4] Cui Xiufang,Li Ying,Li Qingfen: Influence of phytic acid concentration on performance of phytic acid conversion coatings on the AZ91D magnesium alloy, Materials Chemistry and Physics,2-3(2008)503-507

China 2School of Chemistry and Chemical Engineering, South China University of Technology(510641), Guangzhou, P.
China 3Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun (130022) P.
The monolayer and nanometer assembly films of these macrocycle derivatives by means of Langmuir-Blogdett (LB) technique allow functional molecules to be arranged in a highly ordered structure and offer the possibility of application in many aspects[1-3].
Chen (Changchun Institute of Applied Chemistry, China) for his support and Dr.
Thesis of Changchun Institut of Applied Chemistry,China, 1992 [8] Yoneyama,M.; Sugi , M.