نتایج جستجو برای: schiff base

تعداد نتایج: 260838  

2008
Nooraziah Mohd Lair Hapipah Mohd Ali Seik Weng Ng

The pyridine-coordinated Cu(II) atom in the title Schiff base complex, [Cu(C(15)H(11)N(3)O(5))(C(5)H(5)N)], is O,N,O'-chelated by the doubly deprotonated Schiff base ligand. The metal centre is in a square-planar coordination geometry.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Takafumi Ueno Norihiko Yokoi Masaki Unno Toshitaka Matsui Yuichi Tokita Masako Yamada Masao Ikeda-Saito Hiroshi Nakajima Yoshihito Watanabe

Protein-to-protein electron transfer (ET) is a critical process in biological chemistry for which fundamental understanding is expected to provide a wealth of applications in biotechnology. Investigations of protein-protein ET systems in reductive activation of artificial cofactors introduced into proteins remains particularly challenging because of the complexity of interactions between the co...

Journal: :Journal of the American Chemical Society 2007
Shasad Sharif Gleb S Denisov Michael D Toney Hans-Heinrich Limbach

The 1H and 15N NMR spectra of several 15N-labeled pyridoxal-5'-phosphate model systems have been measured at low temperature in various aprotic and protic solvents of different polarity, i.e., dichloromethane-d2, acetonitrile-d3, tetrahydrofuran-d8, freon mixture CDF3/CDClF2, and methanol. In particular, the 15N-labeled 5'-triisopropyl-silyl ether of N-(pyridoxylidene)-tolylamine (1a), N-(pyrid...

2008
Ming-Qian Feng Jing Li Wen-Jie Wei Chang-Hong Liu

The title complex, [Fe(C(12)H(9)ClNO(2))(3)], is a mononuclear Schiff base iron(III) compound. The Fe atom is six-coordinated by three phenolic O and three imine N atoms from three Schiff base ligands in an octa-hedral geometry.

ژورنال: طلوع بهداشت یزد 2013
احرامپوش, محمدحسن, امرالهی, محسن , جمشیدی, بهزاد , طباطبایی, معصومه , عسکر شاهی, محسن , قانعیان, محمدتقی ,

  Background: The heavy metals are the most important pollutants their concentration of which in the environment is increasing in connection with cities and industrials development. One of these metals is chromium which, in the trivalent and Hexavalent oxidation state, is used in industries such as electroplating, glass, ceramic, tannery and leather. Hexavalent Chromium has proven several healt...

Journal: :Australian Journal of Chemistry 1966

Journal: :Journal of The Japan Petroleum Institute 1979

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده علوم 1393

چکیده موضوع تحقیق : سنتز و شناسایی هشت لیگاند بازشیف بزرگ حلقه و بزرگ غیر حلقه ای حاوی اتمهای دهنده ی مختلف و احیای تعدادی از آنها هدف : هدف از این پرو‍‍‍ژه سنتز و شناسایی هشت لیگاند بازشیف بزرگ حلقه و بزرگ غیر حلقه ای و احیای تعدادی از آنها می باشد . روش انجام کار : در این پروژه ابتدا دو لیگاند 4 دندانه o (hl1, hl2) n3 جدید سنتز و به وسیله روشهای اسپکتروسکوپی ir و 13c nmr و 1h nmr و میکر...

Journal: :journal of nanostructures 2015
h. khojasteh v. mirkhani m. moghadam s. tangestaninejad i. mohammadpoor-baltork

palladium is the best metal catalyst for suzuki cross coupling reaction for synthesize of unsymmetrical biaryl compounds. but its high cost limits its application in wide scale. using of nanoscale particles as active catalytic cites is a good approach for reducing needed noble metal. by loading precious nanoparticles on magnetic nanocores as a support, recycling and reusing of catalyst will be ...

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