نتایج جستجو برای: crystal form

تعداد نتایج: 837146  

Journal: :Acta Crystallographica Section F Structural Biology Communications 2016

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2005

Journal: :Green Processing and Synthesis 2021

Abstract Metal-free phthalocyanine (H 2 Pc) has been widely used as photosensitive semiconductors in the organic optoelectronics field because of its unique planar molecular structure and high photocarriers’ generation efficiency. Herein, this paper related to a new facile efficient one-step method for preparing specific crystal form H Pc with crystallinity through ball-milling process, which α...

2007
Timothy G. Cooper William Jones W. D. Samuel Motherwell Graeme M. Day

Crystal structure prediction calculations have been performed for the a-amino acid alanine with the intention of developing reliable computational methods for flexible molecules and, specifically, to study the crystal packing of the more flexible amino acids. For the a-amino acids, the density functional theory geometry optimised conformations of the isolated molecules are considerably differen...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
wang liyong han yuanyuan ding shiwen

ticl4, ammonia, inorganic salts as raw material, nanometer composite-crystal tio2 powders were synthesized by two-step chemical method. precursors were crystallized with different phase and stable composite-crystal tio2 with anatase and rutile phase was prepared at low temperature. quantitative control of crystal phase was realized. remarkable factors including reaction ph value, reaction time,...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1996

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