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Science, 2002
CHEMISTRY Molecular analogs of perovskites, which includes important mantle minerals and high-temperature superconductors, have been synthesized. Bremner et al . crystallized cubic and 2-H hexagonal variants of a perovskite in which (NH4)Cl6 octahedra form the building blocks of a corner ...
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CHEMISTRY Molecular analogs of perovskites, which includes important mantle minerals and high-temperature superconductors, have been synthesized. Bremner et al . crystallized cubic and 2-H hexagonal variants of a perovskite in which (NH4)Cl6 octahedra form the building blocks of a corner ...
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Metal‐Free Aryltrifluoromethylation of Activated Alkenes
Angewandte Chemie International Edition, 2013Metal-free: The first metal-free aryltrifluoromethylation of activated alkenes has been developed. With this method, trifluoromethylated isoquinolinediones, spirobicycles, oxindoles, and α-aryl-β-trifluoromethylamides were obtained with high control of the regioselectivity.
Kong, Wangqing +4 more
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Metal-Free Highly Luminescent Silica Nanoparticles
Langmuir, 2012Stable, cost-effective, brightly luminescent, and metal-free organosilica nanoparticles (NPs) were prepared using the Stöber method without any thermal treatment above 318 K. The white-light photoluminescence results from a convolution of the emission originated in the NH(2) groups of the organosilane and oxygen defects in the silica network.
Brites, Carlos +5 more
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Chemical & Engineering News Archive, 2012
In a chemical first, an international research team has developed a metal-free reaction that hydrogenates aromatic rings to form cyclohexyl derivatives. The achievement could spark a broader range of applications for industrial hydrogenations, which are widely used for processing petroleum and foods.
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In a chemical first, an international research team has developed a metal-free reaction that hydrogenates aromatic rings to form cyclohexyl derivatives. The achievement could spark a broader range of applications for industrial hydrogenations, which are widely used for processing petroleum and foods.
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Acta Crystallographica Section C Crystal Structure Communications, 1999
The molecule of the title compound, C 32 H 18 N 8 , is slightly distorted at the corners. Two of the phenyl rings are located below the molecular plane while the other two are above the plane. This leads to a molecular symmetry of C i as opposed to D 2h , assumed for the free molecule.
S. Matsumoto, K. Matsuhama, J. Mizuguchi
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The molecule of the title compound, C 32 H 18 N 8 , is slightly distorted at the corners. Two of the phenyl rings are located below the molecular plane while the other two are above the plane. This leads to a molecular symmetry of C i as opposed to D 2h , assumed for the free molecule.
S. Matsumoto, K. Matsuhama, J. Mizuguchi
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SAE Technical Paper Series, 2010
<div class="section abstract"><div class="htmlview paragraph"> We herewith would like to consider the reasons which led to research and development of automotive leather which could be not only chrome-free but also Metal-free <sup> <span class="xref">1</span> </sup> and aldehyde-free.
Gianluca Sartori +4 more
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<div class="section abstract"><div class="htmlview paragraph"> We herewith would like to consider the reasons which led to research and development of automotive leather which could be not only chrome-free but also Metal-free <sup> <span class="xref">1</span> </sup> and aldehyde-free.
Gianluca Sartori +4 more
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CORROSION 2008, 2008
Abstract Historically highly pigmented metallic zinc primers have been selected for highly corrosive environments such as the offshore and petrochemical industries. These primers gave excellent performance in accelerated corrosion tests and this correlated with what was seen in the field.
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Abstract Historically highly pigmented metallic zinc primers have been selected for highly corrosive environments such as the offshore and petrochemical industries. These primers gave excellent performance in accelerated corrosion tests and this correlated with what was seen in the field.
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