Results 31 to 40 of about 1,053 (173)

Electrochemically driven regioselective C−H phosphorylation of group 8 metallocenes

Nature Communications, 2022
Metallocene-based phosphines are compounds with potential use in catalysis. Here, the authors report the electrochemical regioselective functionalization of group 8 metallocenes with phosphine oxides; over 60 examples of phosphorylated (benzo)ferrocenes ...
Hao Zheng, Chang-Hui Liu, Shi-Yu Guo, Gu-Cheng He, Xiang-Ting Min, Bo-Chao Zhou, Ding-Wei Ji, Yan-Cheng Hu, Qing-An Chen   +8 more
doaj   +1 more source

Photooxidation of Some Metallocenes in a Polymer Matrix

Molecules, 2005
The changes in the electronic absorption spectra (UV-Vis) of some metallocene-doped poly(methyl methacrylate) (PMMA) thin films containing chloroform molecules as impurities were studied after photoexcitation in the nitrogen atmosphere.
B. Mallik
doaj   +1 more source

A Borane Sandwich Analogue of Ferrocene

Angewandte Chemie, EarlyView.
The first ferrocene analogue with two boron‐based ligands is identified through a global exploration of the FeB10H20 potential energy surface. The η5,η5‐Fe(B5H10)2 complex emerges as the global minimum, showing that metal coordination inverts borane stability and enables aromatic boron rings inaccessible in isolation.
Viviana Roman‐Ventura, Luis Quispe‐Corimayhua, Dumer S. Sacanamboy, Diego Inostroza, Luis Leyva‐Parra, Dayán Páez, Kelling J. Donald, Gabriel Merino, William Tiznado   +8 more
wiley   +2 more sources

Photoelectron spectra of metallocenes

Journal of Electron Spectroscopy and Related Phenomena, 1980
Abstract The He(II) spectra of the unsubstituted metallocenes {M(η-C5H5)2}, M  V, Cr, Mn, Fe, Co, Ni and Ru, and of {Mn(η-C5H4Me)2} are reported; both He(I) and He(II) spectra of some decamethylmetallocenes {M(η-C5Me5)2}, where M  Mg, V, Cr, Mn, Fe, Co and Ni, are also given.
Cauletti, C, Green, J, Kelly, M, Powell, P, Vantilborg, J, Robbins, J, Smart, J   +6 more
openaire   +2 more sources

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

Angewandte Chemie, EarlyView.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa, Riccardo Bellin, Besma Boulila, Francesco Vaghi, Manuel Orlandi   +4 more
wiley   +2 more sources

Propene-cycloolefin polymerization [PDF]

Polyolefins Journal, 2014
Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P).
Laura Boggioni, Incoronata Tritto
doaj   +1 more source

Hypergolic Synthesis of Inorganic Materials by the Reaction of Metallocene Dichlorides with Fuming Nitric Acid at Ambient Conditions: The Case of Photocatalytic Titania

Sci, 2021
Hypergolic materials synthesis is a new preparative technique in materials science that allows a wide range of carbon or inorganic solids with useful properties to be obtained.
Nikolaos Chalmpes, Georgios Asimakopoulos, Maria Baikousi, Athanasios B. Bourlinos, Michael A. Karakassides, Dimitrios Gournis   +5 more
doaj   +1 more source

Reductive Activation of White Phosphorus to [P4]2–, [P2]2–, and a Formal P2– Radical by Rare‐Earth Dinitrogen Complexes

Angewandte Chemie, EarlyView.
Masked divalent yttrium and gadolinium dinitrogen complexes mediate the fragmentation of white phosphorus, converting P4 into discrete dimetallic complexes of [P4]2– and [P2]2– ligands, and an unprecedented monatomic P2– radical ligand. Structural, spectroscopic, magnetic, and DFT studies reveal insight into the bonding between these unusual Pn units ...
Arpan Mondal, Richard A. Layfield
wiley   +2 more sources

Halogen and Hydrogen Bonding Interplay in the Crystal Packing of Halometallocenes

Molecules, 2018
This paper focuses in the influence of halogen atoms in the design and structural control of the crystal packing of Group VIII halogenated metallocenes.
Karina Shimizu, João Ferreira da Silva
doaj   +1 more source

Paramagnetic Solid-State NMR Study of Solid Solutions of Cobaltocene with Ferrocene and Nickelocene

Magnetochemistry
The metallocenes ferrocene (Cp2Fe, 1), nickelocene (Cp2Ni, 2), and cobaltocene (Cp2Co, 3) crystallize in the same space group (P21/a) and they have the same shape and similar size.
Gabrielle E. Harmon-Welch, Vladimir I. Bakhmutov, Janet Blümel   +2 more
doaj   +1 more source