The general nature of the problem of molecular structure in protein chemistry is discussed. As in all of organic chemistry, this problem has two aspects: the determination of the structural formula (a province of classical organic chemistry) and the determination of the molecular conformation. Recent progress in both of these areas has been great. Information on the amino acid sequences in prot...

EDWARD N. BAKER,a~ " TOM L. BLUNDELL, b MAMANNAMANA VIJAYAN,C~ ELEANOR DODSON,d§ GUY DODSON,d~ GARY L. GILLILAND e AND JOEL L. SUSSMAN f'g** at aDepartment of Chemistry and Biochemistry, Massey University, Palmerston North, New Zealand, bICRF Unit of Structural Molecular Biology Department of Crystallography, Birkbeck College, Malet St, London, WC1E 7HX, England, CMolecular Biophysics Unit, Ind...

In this paper, the quantum chemistry calculations related to the structural parameter of the chromite and molybdate anions and the complexes obtained from them with the glycine and alanine amino acids were performed. The calculations were carried out using HF and DFT methods and in the base series 6-31G *. Thermodynamic studies related to the formation of complexes have been considered and thei...

Given the rich diversity of research fields usually ascribed to chemistry in a broad sense, the present paper tries to dig our characteristic parts of chemistry that can be conceptually distinguished from interdisciplinary, applied, and specialized subfields of chemistry, and that may be called chemistry in a very narrow sense, or ‘the chemical core of chemistry’. Unlike historical, ontological...

-1,4-Glucans having oligosaccharide appendages (O-/N-linked -maltoside and O-/N-linked -lactoside) at 6C positions of all repeating units can be readily prepared from cellulose through a two step strategy composed of: (1) regio-selective and quantitative bromination/azidation to afford 6-azido-6-deoxycellulose; and (2) the subsequent Cu + -catalyzed coupling with oligosaccharides having term...

A rich variety of inorganic-organic hybrid thioantimonates and thiostannates were prepared during the last few years under solvothermal conditions applying organic amine molecules or transition metal complexes as structure directors. In this review synthetic approaches to and structural features of these thiometallates are discussed. For thioantimonates(III) the structures range from well isola...

Structural Entities in Complex Oxides While materials at low temperatures are often characterized in terms of crystal chemical concepts, descriptions of their high-temperature properties are usually based on defect chemistry. Both approaches are obviously of great value but also have clear limitations. While the defect chemistry is often weakly linked to the crystal structure of the material an...

Green chemistry is an alternative route of which has overcome the limitations of other chemical methods. Nanocrystalline zinc oxide (NC-ZnO) with different structures have been grown on quartz plates by spin coating method by the use of plant extracts of Citrus aurantifolia which can be a cost effective and eco-friendly approach.. The present exploration describes the synthesis and characteriza...

State Key Laboratory of Structural Chemi Structure of Matter, Chinese Academy of S E-mail: wzhuang@irsm.ac.cn Department of Chemistry, Bohai University Department of Chemistry, Rice Universi [email protected] Department of Chemical Physics, Universi Hefei, Anhui, 230026, P. R. China Fujian Provincial Key Laboratory of The Xiamen University, Xiamen, Fujian 361005, College of Chemistry and Molecu...

The large number of known stable compounds in which phosphorus has a low coordination number makes it clear that such compounds can no longer be regarded as “exotic” in main group chemistry. While the rich chemistry of P-C multiply bonded systems makes clear their affinity to their organic congeners, iminophosphanes in particular are also of increasing importance. The linkage of a phosphinidine...