Results 81 to 90 of about 1,204,200 (341)

Recent advances in metathesis-derived polymers containing transition metals in the side chain

open access: yesBeilstein Journal of Organic Chemistry, 2015
This account critically surveys the field of side-chain transition metal-containing polymers as prepared by controlled living ring-opening metathesis polymerization (ROMP) of the respective metal-incorporating monomers.
Ileana Dragutan   +4 more
doaj   +1 more source

Second-Sphere Coordination Revisited

open access: yesCHIMIA, 2014
Since the concept of second-sphere coordination of transition metal complexes was introduced by Alfred Werner in 1913, the investigation of the phenomenon has emerged as a major thrust area — a significant part of which is based on the use of ...
Zhichang Liu   +2 more
doaj   +1 more source

Kondo resonances and anomalous gate dependence of electronic conduction in single-molecule transistors [PDF]

open access: yes, 2005
We report Kondo resonances in the conduction of single-molecule transistors based on transition metal coordination complexes. We find Kondo temperatures in excess of 50 K, comparable to those in purely metallic systems.
D. Natelson   +8 more
core   +2 more sources

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Molecular Orbital Insights of Transition Metal-Stabilized Carbocations

open access: yesFrontiers in Chemistry, 2019
Transition metal-stabilized carbocations are characterized by synthetically valuable interactions, yet, to date there are no comprehensive reports of the many bonding modes that can exist between a metal and carbocation.
Hannah Goodman   +2 more
doaj   +1 more source

Synthesis, Characterization and Antibacterial activities of Uracil and Uracil–Oxalate Complexes with Cr(III) and Fe(III) [PDF]

open access: yesEngineering and Technology Journal, 2019
New complexes of the some trivalent transition metal ions of the uracil such as [M(Ura)3Cl3] and mixed ligand metal complexes with uracil and oxalic acid [M(Ura)2(OA)(OH2)Cl].H2O type, where (Ura)=Uracil, (OA= Oxalic acid dihydrate, (M= Cr+3 and Fe+3 ...
Shatha Obaid
doaj   +1 more source

Installation of internal electric fields by non-redox active cations in transition metal complexes. [PDF]

open access: yes, 2019
Local electric fields contribute to the high selectivity and catalytic activity in enzyme active sites and confined reaction centers in zeolites by modifying the relative energy of transition states, intermediates and/or products.
Alexandrova, Anastassia N   +5 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

Chemical Bonding in Molecules and Complexes Containing d-Elements Based on DFT [PDF]

open access: yes, 2018
Summary.: Metal-ligand bonding in transition metal halide molecules and complexes with different central ions, oxidations states, and coordination numbers: CrIIIX63−, CrIVX4, CrIIX2 (X = F,Cl,Br,I), MIIICl63−(M = Mo,W), MIII(H2O)63+(M = Cr,Co) and ...
Atanasov, Mihail   +2 more
core  

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