Search results

The Structure of Two-dimensional Layered Cu (Ⅱ) Complex Material Xi-Shi Tai 1, a 1 College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
The structure of Cu (II) complex was characterized by single-crystal X-ray diffraction.
Introduction Investigates of the coordination chemistry of copper (II) continue to be stimulated by interest in developing models for copper proteins and in understanding the factors which give rise to the seemingly infinite variety of distortions from regular stereochemistry observed in Cu (II) complexes [1, 2].
The structure of Cu (II) complex was characterized by single-crystal X-ray diffraction.
Two dimensional layered structure of the complex is shown in Fig. 3.

Hurt1,f 1 Brown University, Providence, Rhode Island, 02912 USA a Lin_Guo@brown.edu, bXinyuan_Liu@brown.edu, Vanesa_Sanchez_Ld@brown.edu, d Charles_Vaslet@brown.edu, eAgnes_Kane@brown.edu, f Robert_Hurt@brown.edu Keywords: carbon nanotubes, fullerenes, toxicity, purification, surface chemistry Abstract.
The paper emphasizes the important roles of metal content and bioavailability, carbon surface chemistry, and nanomaterial aggregation state.
As the emerging field of nanotoxicology progresses, there will be increasing focus on the mechanistic basis of toxicity with the goal of understanding the contributions of specific material features, such as size, shape, surface chemistry, and metals content.
The Role of Carbon Surface Chemistry Recent evidence indicates that surface chemistry is an important factor in the toxicity of carbon nanomaterials.
The Role of Aggregation State Two aspects of nanotoxicology that require more attention are the effects of carbon structure and aggregation state.

Synthesis and the Characterizations of Structure and Function of Gallic acid Microcrystalline Cellulose Ester LiuNing1,2,a ,Fang Guizhen2,b ,SuShuang1,c 1 Harbin Commercial University, Chemistry Center, Harbin, Heilongjiang, China 150076 2 Northeast Forestry University, Key Laboratory of Biomass Material Scientific and Technology ,Ministry of Education, Harbin, Heilongjiang, China 150040 awendingzi666@163.com, bfanggz_0@163.com, c shengruxiahua2003@126.com Keywords:Gallic acid microcrystalline cellulose ester; Synthesis; Structure; Oxidationesistance; Characterization.
The structures of reaction materials and products were characterized and its oxidation resistance, stability, acute toxicology were studied by infrared spectroscopy, X-ray diffraction spectroscopy, scanning electron microscopy .The results showed that: gallic acid microcrystalline cellulose ester was successfully synthesized ; its ability to remove all kinds of free radicals was higher than or approximate equal to gallic acid; suitable for room temperature storage, high temperature sterilization, ultraviolet sterilizer, pH3.0~9.0,under these conditions it was stability;it was non-toxic substance, the safety was higher than gallic acid and gallic acid propyl.
Chemical structure characterization of the product 2.1 Infrared analysis of the product: the infrared spectra of gallic acid and microcrystalline cellulose were shown in figure 1 and figure 2 respectively.
Manufacture Technologies of Aromatic and Food Additive, Science Technology Literature Publishing, Beijing, 416(2000) [2]Xu ping.Study on Blend Antioxidants for Oils and �uts[J].The Academic Symposium in the 10th International Food Additives and Burden Exhibition of China ,Shanghai,240~243(2006) [3]Chen Jiahong, Wang Yongmei, Wu Dongmei,et al.Study on Synthesis of Functional Polymer Materials of Polyphenol Carboxylic (I)[J].Chemistry and Industry of Forest Products,25(2),6~10(2005) [4]Liu Ning, Fang Guizhen.Study on the Antioxidant Performance of Gallic Acid Microcrystalline Cellulose Ester[J].
chemistry and adhesion,2009, 3：19~22 [6]An Luobai.Experimental Study on Antitumor Effect of Gllic Acid [D],JIlin University,11(2005) [7]Zhang Chen.Study on the Inhibitory Effect of Pyrogallic Acid on Matrix Metall Oproteinases and Anti-tumor Actibity[D],Jilin university,47(2008) [8]Wang Dezhi.Important Fine Chemicals-gallic Acid[D],Natural Gas Chemical Industry,20:38~43(1995)

PREFACE Within the last few decades, solid-state chemistry has often aimed to establish the relationships between the structures of compounds that are prepared and their physical properties.
Thus, the conditions have been ideal for unravelling the structures of solid-state compounds, measuring their physical properties, and applying suitable theoretical models.
Perhaps the term "soft chemistry" should be regarded more as a way of thinking, a new paradigm in solid state chemistry.
Moreover, the soft chemistry here is largely topotactic : the final product retains the memory of the precursor structure.
A three-dimensional structure, Ti()i(B ), can be obtained from a layered titanate.

FTIR (Fig. 4) highlighted bands at 3470 cm-1 (primary amine) and 2230 cm-1 (nitrile), confirming structure.
FTIR spectroscopy provided further confirmation of the monomer’s molecular structure.
This is due to effective cross-linking and a high density of N-heterocyclic structures.
Fantuzzi, Sustainable and Ecofriendly Chemical Design of High Performance Bio-Based Thermosets for Advanced Applications, Frontiers in Chemistry 9 (2021)
Zhang, Synthesis and properties of a high‐temperature naphthyl‐based phthalonitrile polymer, Macromolecular Chemistry and Physics 214(3) (2013) 361-369

Chemical Structure and Rheological Properties of Tara Polysaccharide Gum BA Jina, JIN LiQiang*b, YAO WenRunc School of Chemistry and Pharmaceutical engineering, Qilu University of Technology, Jinan, Shandong, China 250353 abajin_1987@163.com, *bjin-liqiang@163.com, cyaoweirui@qq.com Keywords: tara gum; polysaccharide; characterization; rheological properties Abstract.
In this paper, chemical structure of tara polysaccharide gum was characterized by FT-IR and GC-MS.
Zhu, et al: Chemistry and Industry of Forest Products, Vol. 29(2009), p. 121-128
Li, et al: Chemistry and Industry of Forest Products, Vol.30(2010), p. 116-122
Shang, et al: Chemistry and Industry of Forest Products Vol. 19 (1999), p. 29-34

To reveal the peculiarities of interaction of I adsorbed on silica gel with analyte, quantum chemistry calculations of the system Eu(Dbm)3•H2O-methylamine and Eu(Dbm)3∙H2O-ammonia were performed.
The quantum chemistry calculations demonstrated high probability of bonding of the ammonia with water molecule in the coordination sphere of Eu(III).
The molecular structure of the complex Eu(Dbm)3∙H2O∙CH3NH2.
The mechanism of the effect of ammonia and amine vapours on intensification of the Eu(III) luminescence has been suggested using the data of IR spectroscopy analysis and quantum chemistry calculations.
Montgomery, General atomic and molecular electronic structure system, J.

This collection covers processes and synthesis, crystal chemistry, phase equilibria, thermodynamics, magnetic and electrical properties, theory, electronic structure, chemical bonding and applications of intermetallic compounds, pnictides, chalcogenides, oxides, halides and other solid compounds containing transition elements.

Phase State Diagrams of a Four-Component System Al-Si-N-O -Analysis of the Thermodynamic Stability of Sialon Compounds Dased on Energy Crystal-Chemistry V.A.
We shall note the presence of an important feature in the diagram structure of the А12O3-SiO2 system.
The compound 15R (m=5) has a structure with a space group R3m.
Crystal structures are 21R (n=7) [16] and 27R (n=9) [17] have been determined using the X-ray analysis.
V16 2263-68 [27] Banno H,Asaka T, Fukuda K.2014 Journal of Solid State Chemistry V213 169-75  [28] Banno H,Hanai T,Asaka T, Kimoto K, Nakano H and Fukuda K.2014 Powder Diffraction  V29 318-24 [29] Banno H,Hanai T,Asaka T, Kimoto K and Fukuda K 2014 Journal of Solid State Chemistry.V211 124-29   [30] Lindqvist O,Sjöberg J, Hull S,Pompe R 1991   Structural ScienceB47 672-78

Due to its low volatility, negligible vapor pressure, reasonable thermal stability, outstanding recyclability and reusability, ionic liquids may be a viable alternative to widely applicable catalysts in the processes of modern synthetic chemistry, the green chemistry [12].
Received that the structure of the IL cation determines the direction of the rearrangement of terpene, whereas the nature of the anion affects the selectivity of the reaction [18, 19].
Structures of all synthesized compounds were defined by 1H and 13C NMR spectroscopy.
Structure of ionic liquids It is found that acetylation of camphene with excess of acetic acid catalyzed by ionic liquids with [H2PO4]- anion proceed with low conversion of camphene.
Das, Bronsted acidic ionic liquid derived from alkylamines as catalysts and medium for Fisher esterification: Study of structure-activity relationship, J.