نتایج جستجو برای: bridged dihydropyrimidinone

تعداد نتایج: 7345  

1999
J. Cioffi W. Yu G. Ginis

This paper addresses the issue of robust VDSL transmission in the presence of bridged taps in the local loop. The impact of bridged taps on transmission performance is described and evaluated for various frequency-division duplexing plans. It is shown that using only 4 bands will under several realistic circumstances result in very poor performance. The conclusion is that a robust duplexing pla...

Journal: :Dalton transactions 2014
Daopeng Zhang Yongzhong Bian Jie Qin Ping Wang Xia Chen

Two cyanide-bridged enantiopure one-dimensional single chain complexes, [Mn((R,R)-Salcy)Fe(pcq)(CN)3]2n·1.5nDMF (1) and [Mn((S,S)-Salcy)Fe(pcq)(CN)3]2n·1.5nDMF (2), have been synthesized and structurally characterized. Systematically magnetic investigations show the antiferromagnetic coupling between the cyanide-bridged Mn(III)-Fe(III) centers and the interesting metamagnetic behavior at about ...

Journal: :Organic & biomolecular chemistry 2015
B V Subba Reddy B Someswarao N Prudhviraju B Jagan Mohan Reddy B Sridhar S Kiran Kumar

A domino reaction has been developed for the synthesis of oxygen bridged bicyclic ethers through the coupling of 4-(2-hydroxyethyl)cyclohex-3-enols with aldehydes in the presence of 10 mol% of molecular iodine in dichloromethane at 25 °C. This method is highly diastereoselective affording the corresponding bicyclic ethers, i.e. octahydro-4a,7-epoxyisochromenes in good yields with high selectivi...

Journal: :Dalton transactions 2016
Jamila Vaughan Damien J Carter Andrew L Rohl Mark I Ogden Brian W Skelton Peter V Simpson David H Brown

Dinuclear silver, di- and tetra-nuclear gold, and mononuclear palladium complexes with chelating C,N,C diethylaminotriazinyl-bridged bis(NHC) pincer ligands were prepared and characterised. The silver and gold complexes exist in a twisted, helical conformation in both the solution- and the solid state. In contrast, an analogous dinuclear gold complex with pyridyl-bridged NHCs exists in a linear...

Journal: :Chemical communications 2015
Sheng Zhang Hongshan Ke Xiangyu Liu Qing Wei Gang Xie Sanping Chen

A 2D oxalate-bridged dysprosium(III) compound, formulated as [Dy(C2O4)1.5(H2O)3]n·2nH2O (1), has been hydrothermally isolated. As for compound 1, structural analysis reveals that the nine-coordinated Dy(III) ions reside in a slightly distorted tricapped trigonal prism. Under an applied magnetic field of 700 Oe, the compound was magnetically characterized as a new example that two slow relaxatio...

Journal: :Discrete Mathematics 1987

Journal: :Journal of the Australian Mathematical Society 1979

Journal: :Journal of the American Chemical Society 2005
Olesya A Kharenko David C Kennedy Borries Demeler Michael J Maroney Michael Y Ogawa

The addition of Cu(I) to the random-coil peptide, C16C19-GGY, produces a self-organized, metal-bridged 4-helix bundle which displays an intense room-temperature luminescence at 600 nm. Emission, UV, and CD titrations along with X-ray absorption studies indicate that the luminescent cofactor is likely a Cu4S4 cluster in which each Cu atom is bridged by the side chains of two cysteine residues an...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید