Results 151 to 160 of about 205,156 (280)

Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds

Angewandte Chemie, EarlyView.
An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong, Si‐In Kim, Jonghwan Lee, Hwon Kim, Jinuk Jang, Jiyeon Kim, Wonyoung Choe, Seung Kyu Min, Young S. Park   +8 more
wiley   +2 more sources

1,4‐Digermacyclopenta‐1,3‐diene: Continuous Cyclic σ*–π Delocalization Enables Aromatic Stabilization in a Heavy‐Element 4π System

Angewandte Chemie, EarlyView.
A five‐membered digermacycle exhibits an unusual 4π electron delocalization enabled by σ*(Ge–C)–π coupling within a nearly planar framework. Combined experimental and theoretical analyses reveal a continuous cyclic delocalization pathway, highlighting σ*–π interactions as a design principle for aromatic stabilization beyond classical π‐conjugated ...
Daichi Uchida, Hiroko Yamada, Yoshiyuki Mizuhata   +2 more
wiley   +2 more sources

Crystal structure of bis(2-chloro-6-fluorobenzoato)bis(pyridine)copper(II), CU(C7H3ClFO2)2(C5NH5)2

Zeitschrift für Kristallographie - New Crystal Structures, 2003
Valach F., Saunders A., Cowley A., Watkin D. J.   +3 more
doaj   +1 more source

Homoleptic and Heteroleptic Borylones L1‐B(Ph)‐L2

Angewandte Chemie, EarlyView.
Density functional theory and CCSD(T) calculations reveal that homoleptic and heteroleptic borylones L1–B(Ph)–L2 are thermodynamically accessible. Remarkably, the homoleptic borylones B(Ph)(N2)2 and B(Ph)(SPh2)2 exhibit higher bond dissociation energies than the related carbones.
Qin Ma, Wei Li, Ya Hu, Lili Zhao, Gernot Frenking   +4 more
wiley   +2 more sources

Chemistry Central Journal themed issue: Current Topics in Chemical Crystallography. [PDF]

Chem Cent J, 2014
Hursthouse M.
europepmc   +1 more source

Crystallography in Chemistry; Current Profile of Chemical Crystallography

Nihon Kessho Gakkaishi, 2014
Hidehiro UEKUSA, Yoshiki OHGO, Tomoji OZEKI   +2 more
openaire   +2 more sources

Thermally Controlled Chiral Supramolecular Polymorphism in Water

Angewandte Chemie International Edition, EarlyView.
Using an amphiphilic oligo(phenyleneethynylene) derivative, we establish LCST‐coupled chirality as a strategy to regulate thermoresponsive supramolecular polymorphism in water. At room temperature, AggI forms discrete assemblies that transform into elongated helical fibers (AggII) near the LCST and subsequently to sheet‐like structures (AggIII) at ...
Zulema Fernández, Yongsheng Li, Daniel Martínez, Julia Terlau, Myongsoo Lee, Bartolomé Soberats, Gustavo Fernández   +6 more
wiley   +1 more source

A Synergistic Inhibitor Development Strategy Against Human UDP‐Galactose‐4‐Epimerase

Angewandte Chemie International Edition, EarlyView.
The epimerase GalE is crucial for the biosynthesis of cancer‐relevant O‐GalNAc glycans. Here, we employ orthogonal, structurally enabled small molecule fragment screens to yield both covalent and non‐covalent inhibitors against GalE within no more than 22 elaborated compounds.
William M. Browne, Jonathan Pettinger, Teresa Weckwerth, Andrew Purkiss, Sing Hei Lok, Louisa Penicaut, Roksana Ogrodowicz, Raveena Prema, Simone Kunzelmann, Chloe Roustan, Ganka Bineva‐Todd, Saskia Pieters, Francesca Zappacosta, Alfred E. Doherty, Isobel Oram, Christelle Soudy, Robert Quinlan, Joanna Redmond, Svend Kjaer, David House, Stephane Mouilleron, Jacob T. Bush, Benjamin Schumann   +22 more
wiley   +1 more source

Serial Chemical Crystallography for Autonomous Quantitative Phase Analysis in an Electron Microscope. [PDF]

Small Methods
Yang T, Waterman DG, Chu Z, Beilsten-Edmands J, Huang Z, Zou X.   +5 more
europepmc   +1 more source

Ribozymes for RNA‐Catalyzed RNA Methylation and Labeling

Angewandte Chemie International Edition, EarlyView.
Ribozymes are powerful tools for site‐specific RNA modification. Their activities range from installing tags and fluorophores to generating natural RNA methylations, making them valuable tools to uncover the many functions that RNA plays in nature.
Carolin P. M. Scheitl, Claudia Höbartner   +1 more
wiley   +1 more source