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Chemistry of Materials, 13(2001)3140-3150
Chemistry of Materials, 13(2001)
Chemistry of Materials, 20(2008)2165-2173
Chemistry of Materials, 16(2004)104-110
Chemistry Letters, 34(2005)586-587.

The structural optimization and the frequency for chitosan monomer, chitobiose and chitotriose with the quantum chemistry abinitio HF and the density functional B3LYP method by choosing 6-311 + G (d, p) as the basis set were calculated and studied.
Experimental researches on the structure, properties and infrared spectra of chitosan and its derivatives have been reported so far [9-11].
The density functional methods of quantum chemistry is adopted to study molecular structure and IR spectra of chitosan in the article.
Calculation method and model The structure of chitobiose is showed in Fig.1, where Φ、Ψ、φ、φ is ∠O5C1O1C4' 、 ∠C1O1C4'C5'、∠C1O1C4'C2' 、∠C2C1O1C4 respectively. χ is dihedral angle ∠O5C5C6O6.
Furthermore, the optimization of the structure is analyzed by the method of natural bond orbital (NBO).

Ni-S(uper)O(xide)D(ismutase) Inspired Ni(II)-Amino Acid Complexes Covalently Grafted onto Merrifield’s Resin - Synthesis, Structure and Catalytic Activity Z.
Pálinkó1,a 1Department of Organic Chemistry, University of Szeged, Dóm tér 8, Szeged, H-6720 Hungary 2Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged, H-6720 Hungary apalinko@chem.u-szeged.hu Keywords: Ni(II)-amino acid complexes; Covalent anchoring; Merrifield’s Resin; FT-IR spectroscopy; Superoxide dismutase (SOD) activity.
In many cases the structures of the anchored complexes and the coordinating groups substantially varied upon changing the conditions of the syntheses.
The other coordination sites depended on the conditions of the synthesis and the structures of the molecules.
Wilkinson in Advanced Inorganic Chemistry, 5th ed., John Wiley & sons, 1988, pp. 744-747 [6] P.C.A.

The morphology and structure of the as-synthesized Mn2O3 products were examined with TEM and HRTEM.
Qian: Journal of Solid State Chemistry Vol.191 (2012), p.10 [5] J.Cao,Y.C.Zhu, K.Y.Bao, L.Shi, S.Z.Liu, Y.
Qian: Journal of Physical Chemistry C Vol.113 (2009), p.17755  [6] L.
Zhou: Materials Chemistry and Physics Vol125 (2011), p.405 [8] X.
Li: Inorganic Chemistry Vol45 (2006), p.7522 [12] L.

Elevating the concentrations of the AgNO3 solution resulted in the formation of flowerlike structures.
Higher AgNO3 concentration resulted in the flowerlike structures
Matijevic, Preparation of monodispersed metal particles, New Journal of Chemistry, 22 (1998) 1203-1215
Part 1-Synthesis and characterization, Journal of Materials Chemistry, 6 (1996) 573-577
Yandell, Outer-sphere electron-transfer reactions of ascorbate anions, Australian Journal of Chemistry, 35 (1982) 1133-1144

Monoclinic structure was obtained after hydrothermal treated at 100 ºC for 6h without calcination step.
At 100 oC with treatment time of 2-4h (Fig. 1 (a)-(b)) shows XRD pattern of impurities phase of NH4VO3 orthorhombic structure corresponding to the JCPDS File Card No. 01077-10123 [6], multiphase of tetragonal and monoclinic structure of BiVO4 corresponding to the JCPDS File Card No. 00-014-0133 [7] and No. 00-014-0688 [8], respectively.
Also, photophysical and photocatalytic properties of BiVO4 are strongly influenced by the way of preparation and its crystal structure.
For example, tetragonal structure of BiVO4 absorbs in the ultraviolet region (band gap 2.9 eV), whereas monoclinic structure of BiVO4 with a 2.4 eV band gap has a characteristic visible light absorption in addition to the UV band [9].
Single phase monoclinic structure was obtained after hydrothermal treatment at 100 oC for 6h.

Yallur1,e 1Department of Chemistry, M.S.
Chemistry–A European Journal. 13, 18 (2007) 5106-5112
Physical Chemistry Research. 8, 1 (2020) 1-18
Arabian Journal of Chemistry. 14, 6 (2021) 103180
Materials Today Chemistry. 20 (2021) 100438

Journal of Materials Chemistry.
Journal of Physical Chemistry C. 2019,123(22): 13491-13499 [16] Wu Feng, Zhang Xiaoxiao, Zhao Taolin, Li Li, Xie Man, Chen Renjie.
Reconstructing the Surface Structure of Li-Rich Cathodes for High-Energy Lithium-Ion Batteries.
Journal of Materials Chemistry. 2017, 29:10299-10311 [23] Yanhong Xiang, Xianwen Wu.
Chemistry of Materials. 2019,31(12): 4330-4340 [36] Chen Tao, Li Xiang, Wang Hao, Yan, Xinxiu, Wan Lei, Deng Bangwei, Ge Wujie, Qu, Meizhen.

Clinical Chemistry: Interpretation and Techniques, 3rd ed.; Philadelphia, Lea & Febiger, 1988. 2 Dorozhkin, S.
Journal of Biological Chemistry, 1988, v. 263, n. 27, pp. 13718- 13724. 7 Pattanayak, D.
Chemistry of Materials, Oct. 1995, v. 5, n. 10, pp. 1417 - 1423. 9 Zhang, H.
Chemistry of Materials, Nov. 2005, v. 17, n. 23, pp. 5824-5830. 10 Calvin, M.; Martell, A.
E.; Chemistry of the Metal Chelate Compounds, Nueva Jersey, Prentice-Hall Inc., 1952. 11 Day Jr., R.

In this paper, we referred to the optimal conditions given in reference [12] to prepare the PS/SiO2 nanospheres with core-shell structure.
Wang: Chemistry of Materials Vol. 18(20) (2006), p. 4902 [7] Y.
Zhao: Chemistry Letters Vol. (1) (2002), p. 62 [9] P.S.
Kosuge: Chemistry Letters Vol. (1) (1998), p. 101 [10] W.J.
Shen: The Journal of Physical Chemistry C Vol. 112(31) (2008), p. 11623