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Fig. 1 The chemical structures of targeted Hsp90 and other cancer drugs approved in a clinical trial.
Nardai, The 90-kDa molecular chaperone family: structure, function, and clinical applications.
Ward (Eds.), Comprehensive Medicinal Chemistry III, Elsevier, 2017, pp. 202-280
Nikola, Crystal structure of an Hsp90-geldanamycin complex: targeting of a protein chaperone by an antitumor agent, Cell, 89, 1997, 239-250
Santi, Crystal structure and molecular modeling of 17-DMAG in complex with human hsp90, Cell Chem.

Fig. 1 Equilibrium ground-state structure of CH2BrCl optimized at UHF level of theory and the CAS(8,7)/cc-pvdz values in parentheses.
“Chemistry of the Upper and Lower Atmosphere”Academic Press: San Diego, CA, 2000
Yang, et al, “Valence Electronic Structures of CH2BrCl and CF2BrCl: Binding Energy Spectra and Electron Momentum Distributions,” J.
Frisch, Exploring Chemistry with Electronic Structure Methods, 2nd ed, Gaussian, PA: Pittsburgh, 2002
Binding Energy and Structure of the HF Dimer,” J.

This suggests that the fcc structure is the dominant structure in the sample.
European Journal of Inorganic Chemistry, 2733-2738, 2008 [11] Petit, C.; Wang, Z.
Journal of Physical Chemistry, 109(12) 15309-15316, American Chemical Society. q [12] R.
Structure Determination by X-ray Crsytallography: Analysis by X-rays and Neutrons 5thEd.
Journal of Physical Chemistry, 108: 9604-9607, 2004, American Chemical Society

From Fig. 1, it is found that the mass densities of the two structures were so closely at the same pressure, but the lattice parameter of the BCC structure changed more obviously than the FCC structure.
Wu, Materials Chemistry Physics 92 (2005) 112-117
Rappe, Journal of Physics and Chemistry Solids 61 (2000) 315-320
Milman, Chemistry Physics Letters 362 (2002) 266-270
Anderson, Journal of Physics and Chemistry Solids 24 (1963) 909-917

Jafar Mazumder Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran-31261, Saudi Arabia.
Nevertheless, it seems fair to say that the real opportunities for carbon nanotube chemistry still lie in the future.
Although large number of researchers in the fields of chemistry and physics have been pursuing the same goals using synthetic systems, nucleic acids and proteins still outclass man made materials.
The stack structures were termed “aedamers”, were believed to adopt a “pleated secondary structure” in aqueous solution [49].
A general concept for the preparation of hierarchically structured pi-conjugated polymers, Chemistry 14 (2008) 2942- 2955

The morphologies, structures and optical property of the product were characterized by SEM, XRD and FT-IR, etc.
Picture of typical oncomelania snails Results and Discussion Morphologies and Structures Fig. 2.
All of the peaks match well with the hexagonal structured zinc oxide (JCPDS, No: 75-0576) so indicating that the product was pure.
The crystal structure of product could be described by the following parameters: a=3.2500, b=3.2500，c=5.2070，α=90，β=90 and γ=120.00.
Yang: Industrial & Engineering Chemistry Research, Vol. 53(2014), p.2229

The use of methyl methacrylate enhances the formation of the characteristic bonds in the polymer structure.
The synthesized PGS-co-LA polymer materials were characterized using fourier transform infrared spectroscopy (FTIR) for the chemical structure and differential scanning calorimeter (DSC) for the thermal properties (10oC/min heating rate scans at temperature between -40 and +40oC).
The proposed chemical structure of the synthesized PGS-co-LA polymer is also shown, which is based on the infrared spectra showing the formation of ester linkage (RCOOR) as well as the carboxyl (RCOOH) and alcohol groups (ROH).
Appreciation was also extended to the technical personnels in the Chemistry Research and Gamma Irradiation Services of the Philippine Nuclear Research Institute (PNRI) for their scientific assistance.
Ivanov: Radiation chemistry of polymers (VSP BV, Netherlands 1992) [7] H.

The effect of ignition temperature on the phase structure, micro morphology and electrochemical performance has been studied.
Based on the previous study, in this paper, the effects of igniting temperatures on the phase structure, micro morphology and electrochemical performance of the LiMn2O4 powders prepared by a low temperature solution combustion synthesis have been studied.
Results and Discussion Structures and compositions.
From Fig.1, it can be seen that all the peaks of the products correspond to the cubic spinel structure with Fd-3m space group (JCPDS 35-0782), indicating that all the products are single phase spinel LiMn2O4.
Acknowledgements The present work was supported by the National Natural Science Foundation of China (No.51062018) and by the Key Subject of Materials Physics and Chemistry of Honghe University.

The maximum enzyme activity of lipase-chitosan conjugate needs the structure with 15nm pore of mesoporous silica.
This method don't effect the structure of lipase, but Non-covalent nature of the linkage is usually a significant drawback for application of lipase in various surroundings, especially temperature, pH, ion concentration.
Chitosan is a good support for enzyme immobilization in the food chemistry since it is non-toxic (food grade), available in different forms (powder, gel, fibers and membranes), has high protein affinity and allows easy derivatization.
So, Trimethylbenzene was used as pore expander because the structure of it is flat to be effective for increasing the pore size.
In the Fig. 4, the XRD pattern (Cu-Kα X-ray source using a Rigaku D/MAX-III instrument) shows that the structure of mesoporou silica has a tendency to collapse above the ratio of 1.5.

At ambient temperature and pressure, the crystal structure of NaYF4 usually exists in two polymorphs, namely, cubic (α–) and hexagonal (β−) phase.
Normally, the crystal structure and morphology are two primary factors which affect the luminescence performance of the materials.
Li: Chemistry of Materials.
Lin: Inorganic Chemistry.
Zhao: Chemistry-a European Journal.