Results 111 to 120 of about 46,521 (243)

A de‐novo Approach Towards Divergent [3+2π/σ] Photocycloadditions of Nitrones via Assembly‐Controlled Kinetic Electron Transfer Gating

Angewandte Chemie, EarlyView.
A metal‐free photocatalytic platform converts nitrones into 4‐isoxazolines and oxa–aza–bicycloheptanes through divergent [3+2π/σ] cycloadditions. Assembly‐controlled kinetic electron transfer gating dictates substrate activation, enabling selective reactivity beyond thermodynamic expectations.
Nayan Saha, Rajesh Kancherla, Jorge Escorihuela, Shana Chandran, Mrinal K. Bera, Magnus Rueping, Burkhard König   +6 more
wiley   +2 more sources

High Density and High Performance Drilling Fluid System Research and Application at Pakistan North Region ADHI Block

Zuanjingye yu wanjingye
The mid-upper Early Miocene Murree formation in the ADHI block, northern Pakistan, is a long red mudstone located in the Φ311.15 mm interval with a length of 1400-1600 m, which is a major difficulty and extremely challenging drilling operation in the ...
Ling LI, Chuxiang ZHOU, Yongzhong JI, Guangjin ZHANG, Gang WU   +4 more
doaj   +1 more source

Structure and Spectroscopic Characterisation of Phenanthroline‐Based Iodobismuthate(III) Complexes Utilised for Raw Acoustic Signal Classification

Advanced Intelligent Discovery, EarlyView.
Memristors based on trimethylsulfonium (phenanthroline)tetraiodobismuthate have been utilised as a nonlinear node in a delayed feedback reservoir. This system allowed an efficient classification of acoustic signals, namely differentiation of vocalisation of the brushtail possum (Trichosurus vulpecula).
Ewelina Cechosz, Gisya Abdi, Andrzej Sławek, Marlena Gryl, Konrad Szaciłowski   +4 more
wiley   +1 more source

[O─I─O]+ Halogen‐Bonded Complexes of Pyridine N‐Oxides

Angewandte Chemie, EarlyView.
The missing puzzle of 3‐center‐4‐electron halogen‐bonded complexes viz. [O─I─O]+ of pyridine N‐oxides are structurally characterized by x‐ray diffraction. Monodentate N‐oxide O‐atom acts as the halogen bond acceptor. Their solution complexations are characterized by 15N NMR spectroscopy.
Rakesh Puttreddy, Sergi Burguera, Antonio Frontera, Kari Rissanen   +3 more
wiley   +2 more sources

Raw X-ray data for CSD Communication 2024, CCDC: 2339046

<p>Raw data for a crystal structure, CCDC deposition number 2339046, for teaching purposes.</p ...
Stawski, Wojciech
core   +1 more source

Single‐Step Analog In‐Memory Matrix Computation in Three‐Dimensional Circuits

Advanced Intelligent Systems, EarlyView.
A wooden model illustrates a 3D memristive array designed for single‐step kernel convolutions. It shows how two‐dimensional input data are mapped into the 3D array and convolved in parallel with stored kernels. Color‐coded connection points represent programmed memory‐element values, with each color corresponding to a specific kernel weight.
Alireza Jaberi Rad, Koushik Kumar, Fatemeh Kiani, Yi Huang, Ali Abdel‐Maksoud, Zheshun Xiong, Yunzhi Ling, Wuyu Zhao, Qiangfei Xia   +8 more
wiley   +1 more source

Photochemical Oxygen‐Atom‐Transfer Reactivity of Platinum(II) Peroxycarbonates

Angewandte Chemie, EarlyView.
The coordination chemistry of metal–peroxycarbonate complexes (M(CO4)) remains poorly understood, with no reported studies of the photochemical reactivity of M(CO4) complexes. The platinum(II) peroxycarbonate complexes Pt(PPh3)2(CO4) and Pt(dppe)(CO4) (dppe = 1,2‐bis(diphenylphosphino)ethane) have been structurally characterized and are shown to ...
Meghan G. Sullivan, Jesse B. Gordon, Brandon M. Campbell, Shao‐Liang Zheng, Daniel G. Nocera   +4 more
wiley   +2 more sources

Rare‐Earth Multivariate Metal–Organic Frameworks: Cationic Radius Biased Compositional Control and Property Tuning

Angewandte Chemie, EarlyView.
A family of multivariate metal–organic frameworks, UoB‐116(Ln), can be prepared using up to 16 different metals, revealing the ability to tune properties through compositional control. ABSTRACT The synthesis of a multivariate metal–organic framework (MTV‐MOF) family, [Ln(DNNDI)1.5]n (UoB‐116), is reported (DNNDI: N,N'‐bis(dinicotinate)‐1,4,5,8 ...
Adnan Ishaq, Joseph O. Ogar, Asif Raza, Musa M. Mahmud, Jacob L. Brownlee, Danielle E. Schier, Stephen P. Argent, Lucy Clark, Soumya Mukherjee, Neil R. Champness   +9 more
wiley   +2 more sources

An integrated geomechanical–drill string trajectory optimization method for initial wellbore design

Scientific Reports
Designing stable wellbore trajectories in heterogeneous formations remains difficult because geological uncertainty and mechanical constraints interact in non-linear ways.
Shuai Guo, Zhikun Liu, Xinghua Su, Yueyue Liu, Qi Li, Liupeng Wang, Fengtao Qu   +6 more
doaj   +1 more source

Luminescence Vapochromism of a Cu(I)/Na Phosphane Iodide Assembly Based on a Secondary‐Sphere Sodium Response

Angewandte Chemie, EarlyView.
The luminescence of a heterometallic d‐s {Cu2I2Na2} phosphane‐phosphinate aggregate is regulated by an interplay of Na+–π/I– contacts and reversible coordination of oxygen‐containing organic molecules to Na ions. Structural variations caused by the incoming guest lead to a wide and selective variation of the emission color and illustrate a new approach
Henna Korhonen, Dorota Głosz, Mariia Beliaeva, Andrey Belyaev, Constance Lecourt, Adrien Schlachter, Karine Costuas, Guillaume Calvez, Robert Podgajny, Christophe Lescop, Igor O. Koshevoy   +10 more
wiley   +2 more sources