نتایج جستجو برای: halide substituents

تعداد نتایج: 13951  

Journal: :Nanoscale 2011
Manzhou Zhu Gerentt Chan Huifeng Qian Rongchao Jin

We report some interesting results of the chemical reactivity of thiolate-protected [Au(25)(SCH(2)CH(2)Ph)(18)](0) nanoclusters with two types of salts, including tetraoctylammonium halide (TOAX) and NaX. At the early stage of the reaction, [Au(25)(SCH(2)CH(2)Ph)(18)](0) was found to spontaneously convert to its anionic form ([Au(25)(SCH(2)CH(2)Ph)(18)](-)) in the presence of either type of sal...

Journal: :Acta crystallographica Section B, Structural science, crystal engineering and materials 2017
Marc Fourmigué

While an IUPAC definition for hydrogen bonding was only released in 2011 after decades of discussions in the scientific community (Arunann et al., 2011), it did not take such a long time to come up with an analogous definition of halogen bonding (Desiraju et al., 2013), following a revival of this interaction in the literature, which can be traced back to the early 1990s. The identification of ...

2014
Samson Jegan Jennifer Packianathan Thomas Muthiah Duraiswamy Tamilselvi

BACKGROUND Most of the benzyladenine and furfuryladenine derivatives inhibit tumor/cancer cell growth; their toxicity is lesser than the compounds used for the treatment of cancer now-a-days. Many cytokinin derivatives are tested for anticancer activity. RESULTS A series of transition metal complexes containing N(6)-benzyl/furfuryl aminopurines of formula [Mn(FAH)2(H2O)(Cl3)]2.Cl2 (1), [Co(FA...

Journal: :Communications of the ACM 2017

Journal: :Catalysts 2021

Halogen substituents often lead to a profound effect on the biological activity of organic compounds. Flavin-dependent halogenases offer possibility regioselective halogenation at non-activated carbon atoms, while employing only halide salts and molecular oxygen. However, low enzyme activity, instability, narrow substrate scope compromise use enzymatic as an economical environmentally friendly ...

2014
Philip J Harford Andrew J Peel Joseph P Taylor Shinsuke Komagawa Paul R Raithby Thomas P Robinson Masanobu Uchiyama Andrew E H Wheatley

TMPLi (TMP=2,2,6,6-tetramethylpiperidide) reacts with Cu(I) salts in the presence of Et2O to give the dimers [{(TMP)2Cu(X)Li2 (OEt2)}2] (X=CN, halide). In contrast, the use of DMPLi (DMP=cis-2,6-dimethylpiperidide) gives an unprecedented structural motif; [{(DMP)2CuLi(OEt2)}2LiX] (X=halide). This formulation suggests a hitherto unexplored route to the in situ formation of Gilman-type bases that...

Journal: :Chemical communications 2016
Parthiban Ramasamy Da-Hye Lim Bumjin Kim Seung-Ho Lee Min-Sang Lee Jong-Soo Lee

Herein, we describe simple, fast and reproducible halide ion exchange reactions in CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) at room temperature. Through the simple adjustment of the halide ion concentration, the photoluminescence of these NCs can be tuned over the entire visible region (425-655 nm). Photodetector devices based on entirely inorganic CsPbI3 NCs are demonstrated for the first tim...

Journal: :Molecules 2015
Irene Maluenda Oscar Navarro

The Suzuki-Miyaura reaction (SMR), involving the coupling of an organoboron reagent and an organic halide or pseudo-halide in the presence of a palladium or nickel catalyst and a base, has arguably become one of most utilized tools for the construction of a C-C bond. This review intends to be general account of all types of catalytic systems, new coupling partners and applications, including th...

2016
Pabitra K Nayak David T Moore Bernard Wenger Simantini Nayak Amir A Haghighirad Adam Fineberg Nakita K Noel Obadiah G Reid Garry Rumbles Philipp Kukura Kylie A Vincent Henry J Snaith

Optoelectronic devices based on hybrid halide perovskites have shown remarkable progress to high performance. However, despite their apparent success, there remain many open questions about their intrinsic properties. Single crystals are often seen as the ideal platform for understanding the limits of crystalline materials, and recent reports of rapid, high-temperature crystallization of single...

2014
Semiha Bahçeli Halil Gökce

In this study the molecular geometries, experimental vibrational and electronic absorption spectra and quantum chemical calculations of free dimethyl phenylphosphonite, (C8H11PO2), (with synonym, dimethoxyphenylphosphine or phenyldimethoxyphosphine) (Abbreviated as DMPP) and its [Cd(DMPP)].Cl2.H2O metal halide complex have been investigated by using elemental analysis, FT-IR, micro-Raman and UV...

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