Results 61 to 70 of about 716 (160)

Inclusion of chirality in the copper(II) 12-metallacrown-4 framework and the construction of two-dimensional networks.

open access: yes, 2001
Metallacrowns are metallamacrocyclic analogs of crown ethers that contain an (-M-N-O-) repeat unit {M = transition metal ion} in place of the (-C-C-O-) repeat typically found in organic crowns.
Bodwin, Jeffrey John
core   +5 more sources

Design of 2D Porous Coordination Polymers Based on Metallacrown Units [PDF]

open access: yes, 2016
A 12‐metallacrown‐4 (MC) complex was designed and employed as the building block in the synthesis of coordination polymers, one of which is the first permanently porous MC architecture.
MARCHIO', Luciano   +13 more
core   +1 more source

Relaxometric study of copper [15]metallacrown-5 gadolinium complexes derived from alpha-aminohydroxamic acids

open access: yes, 2005
Proton nuclear magnetic relaxation dispersion (NMRD) profiles were recorded between 0.24 mT and 1.4 T for lanthanum(III)- and gadolinium(III)-containing [15]metallacrown-5 complexes derived from alpha-aminohydroxamic acids and with copper(n) as the ring ...
Meyer, Gerd   +17 more
core   +1 more source

Metallacrowns: A new class of metal binding agents [PDF]

open access: yesJournal of Inorganic Biochemistry, 1991
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/29189/1/0000242 ...
Pecoraro, Vincent L.   +4 more
openaire   +2 more sources

Inter-conversion of 15-MC-5 to 12-MC-4 manganese metallacrowns: structure and bioactivity of metallacrowns hosting carboxylato complexes

open access: yesJournal of Inorganic Biochemistry, 2005
Interaction of manganese with salicylhydroxamic ligands (shi) in methanol, in the presence of pyridine, leads to the formation of a series of 15-membered metallacrown (MC) Mn(II)(L)2[15-MCMn(III)N(shi)-5](py)6 or 7, (L=formato, benzoate or alkanoato ligand, py=pyridine).
Dendrinou-Samara, Aikaterini   +7 more
openaire   +3 more sources

Slow Relaxation of the Magnetization in Dysprosium–Aluminum Metallacrowns

open access: yesACS Omega
A series of DyIII-AlIII metallacrowns (MC) with the ligand salicylhydroxamic acid (H3shi) were investigated for magneto-structural interactions. The four MCs demonstrate that slight variations in reaction conditions and molecular components can lead to different classes of MCs.
Chicco S.   +9 more
openaire   +2 more sources

Visible and near-infrared emitting heterotrimetallic lanthanide–aluminum–sodium 12-metallacrown-4 compounds: discrete monomers and dimers

open access: yes, 2022
International audienceThe luminescence properties of two types of heterotrimetallic aluminum-lanthanide-sodium 12-metallacrown-4 compounds are presented here, LnNa(ben)4[12-MCAl(III)N(shi)-4] (LnAl4Na) and {LnNa[12-MCAl(III)N(shi)-4]}2(iph)4 (Ln2Al8Na2),
Eliseeva, Svetlana   +15 more
core   +1 more source

Thermodynamics of binding of carboxylates to amphiphilic Eu(3+)/Cu(2+) metallacrown.

open access: yes, 2009
The binding constants of acetate and benzoate to a Pheha-based 15-metallacrown-5 have been determined by a fluorimetric indicator displacement assay demonstrating on a thermodynamic basis the stabilization effect arising from complexation of the less ...
TEGONI, Matteo   +8 more
core   +1 more source

Synthesis, NMR Characterization, and Cation Binding of Metallacrown Ethers with Asymmetric Bis(phosphinite) and Bis(phosphite) Ligands Derived from 2-Hydroxy-2‘-(1,4,7-trisoxo-9-nonanol)-1,1‘-biphenyl

open access: yes, 2016
Chlorodiphenylphosphine and 2,2‘-biphenylylenephosphorochloridite react with 2-hydroxy-2‘-(1,4,7-trisoxo-9-nonanol)-1,1‘-biphenyl to yield the new α,ω-bis(phosphorus-donor)polyether ligands Ph2PO(CH2CH2O)3-2-C12H8-2‘-OPPh2 and (2,2‘-O2C12H8)P(CH2CH2O)3-2-
Jennifer M. Butler (2117254)   +2 more
core   +2 more sources

Polyoxometalatocrown ether: A new type of metallacrown ether based on polyoxometalate

open access: yesPolyoxometalates
Using chain-like polyethers consisting of two terminal –NH2 groups and (TBA)4[α-Mo8O26] as starting materials, two polyoxometalatocrown ethers were prepared by a cyclization reaction through the formation of Mo≡N triple bonds: (TBA)2[Mo6O17N(o-C6H4OCH2 ...
Fengping Xiao   +5 more
doaj   +1 more source

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