نتایج جستجو برای: coordination reaction
تعداد نتایج: 486437 فیلتر نتایج به سال:
in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...
دو پلیمر کویوردیناسیونی سرب(ii) جدید از مالئیک اسید و فوماریک اسید، [pb(µ7-mal)]n (1) و [pb(µ6-fum)]n (2) از طریق روش سونوشیمی سنتز و با میکروسکوپ الکترونی روبشی، پراش اشعه x و طیف سنجی ir شناسایی شده اند. رفتار گرمایی نمونه های نانو و توده ترکیبات 1 و 2 مطالعه و با یکدیگر مقایسه شدند. ترکیب 1 به وسیله بلورنگاری اشعه x از نظر ساختاری شناسایی شد. اثر حلال بر روی اندازه و ریخت شناسی نانوساختار تر...
the aim of this study was to compare the effects of cognitive-attentional and cognitive-motor load on the performance of bimanual coordination skill. 31 female students (mean age 25+2 years) from shahid beheshti university attending were selected voluntarily and divided randomly into three groups: single group (n=11), cognitive group (n=10) and cognitive-motor group (n=10). single group partici...
The purpose of this study was to investigate the effects of core stabilization training on balance and reaction time in children with developmental coordination disorder. This was a semi-experimental study. Twenty children recognized for DCD, age range 6 to 12 years old were recruited form DCD children rehabilitation center in Tehran and randomly divided into experimental and control groups. Co...
Dendrimer-encapsulated Pt nanoparticles can be synthesized by Pt2þ coordination with dendrimers followed by reduction. In the present study, we have systematically investigated the coordination kinetics of PtCl4 2 with fourth-generation hydroxyl-terminated poly(amidoamine) (PAMAM G4-OH) dendrimers using UV vis spectroscopy measurements. Our experimental investigation clarifies that Pt2þ coordin...
The reaction of 1,1'-ferrocenedicarboxylic acid (LH(2)) with bis(triphenyltin) oxide afforded a molecular heterobimetallic compound [(Ph(3)Sn)(2)L]. In the latter the two carboxylate units of [L](2-) are involved in an anisobidentate chelating coordination mode to two triphenyl tin units. The reaction of LH(2) with trimethyltin hydroxide or bis(tri-n-butyltin) oxide afforded 2D-coordination pol...
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