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دانلود پروژه:سنتز و شناسايي کمپلکس هاي جديد يون هاي مس (II) و کبالت (II) با ليگاند شيف باز حاصل از آمينومتيل بنزن

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سنتز و شناسايي کمپلکس هاي جديد يون هاي مس (II) و کبالت (II) با ليگاند شيف باز حاصل از آمينومتيل بنزن

چکيده

در اين تحقیق کمپلکس‌های مس (II) و روی (II) با ليگاندهاي باز شيف دودندانه جديد NO مشتق از 3-اتوکسي ساليسيل‌آلدهيد و مشتقات پارا-هالوآنيلين سنتز شدند و براي شناسايي ليگاندها و كمپلكس‌هاي سنتز شده از روش‌های IR و 1H NMR استفاده گردید. همچنين ساختار برخي از ترکيبات سنتز شده با پراش اشعه X تک بلور مورد تأييد قرار گرفت.

در طيف IR کليه کمپلکس‌هاي سنتز شده فرکانس کششي پيوند(C=N)  نسبت به ليگاند آزاد کاهش يافت در حالي که فرکانس کششي پيوند C-O)) نسبت به ليگاند آزاد افزايش يافت که اين کاهش و افزايش تأييدي بر سنتز کمپلکس‌هاي مورد نظر است. اين نتايج با نتايج حاصل از پراش اشعه X تک بلور کمپلکس‌هاي تعيين ساختار شده مطابقت داشت. بررسي‌ها نشان داد که در کمپلکس‌هاي سنتز شده‌، دو لیگاند باز شیف به وسيله اتم‌های نیتروژن ایمینی و اکسیژن‌ فنلی خود به فلز کوئوردینه شده‎اند. همچنین نتایج حاصل از پراش اشعه x نشان داد که کمپلکس‎های روی Zn(L1)2 و Zn(L2)2 دارای هندسه چهاروجهی تغییرشکل یافته هستند.

سنتز و شناسايي کمپلکس هاي جديد يون هاي مس (II) و کبالت (II) با ليگاند شيف باز حاصل از آمينومتيل بنزن

مقدمه

کمپلکس‌های باز شیف فلزات اصلي و واسطه با توجه به تهيه آسان و تنوع ساختاري آن‌ها به عنوان مدل‌هاي فضا شيمي از اهميت ويژه‌اي برخوردار هستند [1]. کمپلکس‌های فلزی بازهای شیف در طیف گسترده‌ای از کاربردهای بیولوژیکی نظیر ضد تومور [2]، ضد میکروبی [3] و فعالیت‌های آنتی ‌اکسیدان [4] قرار گرفته‌اند. اين ترکيبات همچنين مي‌توانند به عنوان کاتاليست مورد استفاده قرار گيرند [5].

بررسي مقاله­های علمي در شماره­های اخير مجله­های شيمي معدني نشان مي­دهد که حدود 70 درصد پژوهش­های انجام شده، در زمينه شيمي ترکيبات کوئورديناسيون است. شيمي اين ترکيبات سرشار از پديده­های تازه و شگفت­آور است که تلاش­هاي پي در پي براي بررسي آن­ها ادامه دارد. ادامه هر گونه تلاش نوين در اين زمينه، نيازمند شناخت درست ريشه­های بنيادي است که به کمک آن­ها مي­توان ويژگي اين ترکيبات را تفسير نمود [6 و 7].

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