Methylbismuth: an organometallic bismuthinidene biradical

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Synthesis of a BDPA-TEMPO biradical.

The synthesis and characterization of a biradical containing a 1,3-bisdiphenylene-2-phenylallyl (BDPA) free radical covalently attached to a 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) free radical are described. The synthesis of the biradical is a step toward improved polarizing agents for dynamic nuclear polarization (DNP).

متن کامل

An organometallic route to oligonucleotides containing phosphoroselenoate.

Unlike the widespread use of phosphorothioates in nucleic acid chemistry, complementary research on phosphoroselenoates has been severely limited. Previous routes to DNA and RNA that contain phosphoroselenoates employ elemental Se and KSeCN as Se transfer agents, although these reagents suffer from low or unselective reactivity. The metastability of the Pbond;Se bond demands soluble, selective ...

متن کامل

An organometallic synthesis of TiO2 nanoparticles.

We report the synthesis of TiO2 nanoparticles that uses the low-temperature reaction of low-valent organometallic precursors. Bis(cyclooctatetraene)titanium reacts with dimethyl sulfoxide in organic solution at temperatures as low as room temperature to produce TiO2. In the absence of any supporting ligand, the reaction gives precipitation of amorphous TiO2 powder; however, in the presence of b...

متن کامل

Zethrene and dibenzozethrene: masked biradical molecules?

The syntheses, structures, and physical properties of dibenzozethrenes were explored. The results thus obtained were compared with those for zethrenes. Dibenzozethrenes were synthesized by the nickel-catalyzed cyclodimerization of 9-ethynyl-1-iodoanthracenes. The substituents in zethrene and dibenzozethrene twisted their backbones, and remarkably influenced their properties. Unlike closed-shell...

متن کامل

Dynamic nuclear polarization with a rigid biradical.

A new polarizing agent with superior performance in dynamic nuclear polarization experiments is introduced, and utilizes two TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) moieties connected through a rigid spiro tether (see structure). The observed NMR signal intensities were enhanced by a factor of 1.4 compared to those of TOTAPOL, a previously described TEMPO-based biradical with a flexible te...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chemical Science

سال: 2020

ISSN: 2041-6520,2041-6539

DOI: 10.1039/d0sc02410d