نتایج جستجو برای: crystal form

تعداد نتایج: 837146  

حسین میرزایی, زهرا , حسین میرزایی, زهره , دادخواه, رسول, سپاهی, علی اصغر , مؤذن, محسن,

The study area is a part of the Sanandaj- Sirjan metamorphic belt. The Hamadan metamorphic rocks can be divided into three groups including regional metamorphic rocks, contact metamorphic rocks and migmatites. Garnet crystals are usually common in all of the metamorphic rocks (except for slates and phyllites) and in the igneous rocks (i.e. aplite, pegmatite and monzogranite). These garnets, fro...

Journal: :journal of nanostructures 2014
z. khoshkhan m. salehi

alumina nanomaterials were synthesized via a solution combustion technique using tris-(acetylacetonato) aluminum(iii) complex (1) and tris-(2-formylphenolate) aluminum(iii) complex (2) at 600, and 1000 °c for 3h. the obtained data showed that the procedure without using fuel resulted in a better phase and morphology. to investigate the phase formation, powder x-ray diffraction technique was use...

This paper deals with the design and fabrication of a quartz-crystal resonator used in a thickness-monitor unit, measuring film thickness in a film-depositing system. A purpose-grown quartz crystal is cut to form the desired wafer. Two gold electrodes are deposited on both surfaces of the wafer to provide electrical contacts. The resonance frequency of the resonator, at room temperature, and th...

آزادبخت, آزاده, امانی, احمد, نوتاش, بهروز, دریکوند, زهره ,

The co-crystal compound of 4,4'-bipyridine 3-nithrophthalic acid (1) was obtained by the reaction of 4,4'-bipyridine, 3-nithrophthalic acid and calcium chloride (1:1:1 molar ratio) in solvents mixture H2O/MeOH under solution condition. The crystal structure of this compound was determined by elemental analysis, IR spectroscopy and single crystal X-ray diffraction method. Crystallographic data f...

Journal: :journal of physical & theoretical chemistry 2012
r. mohammadinasab m. tabatabaee m. a. seyed sadjadi

a new proton transfer compound, formulated as (hamp-6-pic)(hpyzd) ∙h2o (1), has been synthesized from the reaction of pyrazine-2,3-dicarboxylic acid (h2pyzd)  and 2-amino-6-methyl pyridine (amp-6-pic), in 1:1 molar ratio. extensive o−h×××o, n−h×××n and o−h×××o hydrogen bonds involving (hamp-6-pic)+ cation, (hpyzd)- anion and co-crystal water molecule٫ static electronic٫ and π…π stacking interac...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

Journal: :Acta Crystallographica Section F Structural Biology and Crystallization Communications 2010

Journal: :Acta Crystallographica Section A Foundations and Advances 2017

Journal: :Bulletin of the Chemical Society of Japan 1957

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