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The crystal structure of rare earth zirconate is pyrochlore structure or fluorite structure.
Sm2Zr2O7 has pyrochlore structure and Er2Zr2O7 is fluorite structure, while Gd2Zr2O7 has pyrochlore and fluorite structure.
Slcight: Handbook on the Physics and Chemistry of Rare Earth, North-Holland, Amsterdam, 1993
Day: Solid State Chemistry: Techniques, Clarenden Press, Oxford, 1987
Andersen: Selected Topics in High Temperature Chemistry, Elsevier Science Publisher B.V, Amsterdam, 1989

Fig. 5 shows the CAs corresponding to each structure given in Fig. 4.
As shown in Fig.7, the micrometer structure is replicated precisely but the submicrometer structure is replicated partly.
Wang: Journal of Materials Chemistry Vol. 18 (2008), p.621 [2] H.
Good: The Journal of Physical Chemistry Vol. 61 (1957), p. 904 [5] N.
Wenzel: Industrial & Engineering Chemistry Vol. 28 (1936), p. 988 [8] A.

The critical properties are; the powder chemistry, flow ability, packing density, and the absence of porosity.
Such a system allows for the industrial scale manufacturing of spherical powders which exhibit controlled chemistry, controlled oxygen level, high flow ability and high density.
The development of such materials offers the possibility to develop new parts with specific structure or mechanical properties and could allow more important reduction of the cost of manufactured parts. 3.
These chemical reactions are controlled by the operating plasma conditions (power, chemistry) and the residence time in high temperature zone.
Tekna’s plasma technology offers a unique process which allows to control in the same time the morphology, the size and the chemistry of the powder produced. 4.

Controllable Fabrication of Layer Structures by Self-assembled Perylene Derivative Chunhua Liu,1 Yunzhi Xie,1 Yongdong Li,1 Xun Li,1 Yibao Li,1,a and Xiaolin Fan1,b 1Key Laboratory of Organo-pharmaceutical Chemistry Jiangxi Province, Gannan Normal University, Ganzhou, 341000, People’s Republic of China.
Meanwhile, some layer-like structures also dispersed on mica surface as shown in Fig. 1b.
Finally the π–π stacking interaction between layers drives to form 3D layer structures.
Toshiaki，Journal of Physics and Chemistry of Solids, 73(2012), 120
Lin, Journal of Solid State Chemistry, 184(2011), 280.

Quantum chemistry calculation.
The structures of them were showed in Fig.°3.
The chemistry and application of dyes.
Journal of Organometallic Chemistry, 2007, 16: 3492-3497
Color chemistry. 2nd ed.

This study utilized electronic structure methods of computational model chemistries to evaluate for Gibbs free energies and enthalpies of formation and reactions of the various species.
Warneck, Chemistry of the Natural Atmosphere, Int.
John, Chemistry and Chemical Reactivity, John Wiley and Sons, USA, 1987
Frish, Exploring Chemistry with Electronic Structure Method, 2 nd ed., Pittsburgh, USA, 1996
Jensen, Introduction to Computational Chemistry, John Wiley and Sons Ltd.

The chemistry of geopolymers is very complex and their characterization is even more complicated, due to their highly disordered heterogeneous structure.
Nuclear Magnetic Resonance (NMR) studies of the geopolymers have been used to verify the gel structure and chemistry.
FTIR analyses not only produced interesting and valuable information related to the structure, chemistry and nature of bonding in the starting materials and geopolymers, but it also suggested a simple technique for the and mechanism of geopolymerization.
The chemistry of geopolymers circulates around the position, intensity and peak area of a broad peak around 1000 cm-1 termed as main peak.
Palomo, Mid-infrared spectroscopic studies of alkali-activated fly ash structure, Microporous and Mesoporous Materials. 86 (2005) 207 - 214

It is the key that coal structure model is chosen and established for this way.
Quantum Chemical Theory Quantum chemistry is a subject that study electronic structures, molecular interactions and chemical reactions in chemical system by quantum mechanic.
Modern quantum chemistry contains mainly two theories, molecular orbital theory and density function theory [3,4].
Molecular orbital theory is the backbone of addressing molecular structures by quantum mechanic.
References [1] Cunbao Deng: Study on Coal Spontaneous Combustion Mechanisms and the Spontaneous Combustion Danger Index, Fuxin, Liaoning technical university, (2006), In Chinese [2] Baojun Wang: Study on Quantum Chemistry of Coal Structure and Reactivity, Taiyuan, Taiyuan University of Technology, (2006), In Chinese [3] J.

In 1987, Noble prize in chemistry was awarded to American scholars who work on big ring polyether chemistry.
It is a certain function physical chemistry process in which the hosts bind alternatively to the guests.
The obtained geometry structures were given in Fig. 1.
So, the above four groups formed a four-gears-tweezers structures in space.
Anion receptor chemistry: highlights from 2008 and 2009.

Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Palladin Ave. 32/34, UA-03680 Kyiv, Ukraine 2Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya St. 6, UA-79005 Lviv, Ukraine † deceased avlad_s_w@mail.ru, bdemchenko@lnu.edu.ua, coleg_yanko@mail.ru, dkharkova@ionc.kiev.ua, eroman.gladyshevskii@lnu.edu.ua Keywords: Rhenium chalcogenido-halogenides, crystal structure, chemical bonding, catalysis.
Introduction Rhenium cluster compounds attract large attention due to their applications in catalysis, medicine, photonics, preparative chemistry, etc.
Molecular structure of I.
Saito, Rhenium sulfide cluster chemistry, J.
Batail, Chemistry of hexanuclear rhenium chalcohalide clusters, Chem.