Two 3D heterometal-organic frameworks based on infrequent trigonal bipyramidal Ln(5) clusters as nodes were structurally and magnetically characterized (Ln=Gd (1), Dy (2)). The results indicate large MCE of up to 30.7 J kg(-1) K(-1) in 1 and slow magnetic relaxation behavior in 2. Expectedly, constructing 3D MOFs based on multinuclear clusters as nodes may will be a new strategy for achieving large -ΔS(m). Additionally, compound 1 exhibits high thermal and solvent stabilities, providing a favorable foundation for realistic applications.
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http://dx.doi.org/10.1002/chem.201202412 | DOI Listing |
Acta Crystallogr E Crystallogr Commun
October 2024
Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan.
The title compound, [Zn(CHClNO)Cl], is a dinuclear zinc(II) complex with three chlorido ligands and one penta-dentate ligand containing quinolin-8-olato and bis-(pyridin-2-ylmeth-yl)amine groups. One of the two Zn atom adopts a tetra-hedral geometry and coordinates two chlorido ligands with chelate coord-ination of the N and O atoms of the quinolin-8-olato group in the ligand. The other Zn atom adopts a distorted trigonal-bipyramidal geometry, and coordinates one chlorido-O atom of the quinolin-8-olato group and three N atoms of the bis-(pyridin-2-ylmeth-yl)amine unit.
View Article and Find Full Text PDFChemphyschem
December 2024
Department of Physical Chemistry and Microreaction Technology, Institute for Chemistry and Biotechnology, TU Ilmenau, Weimarer Straße 32, 98693, Ilmenau, Germany.
We are presenting an easy synthetic access to the aqueous synthesis of truncated trigonal silver nanobipyramids with tunable width and height in a facile two step synthesis. We modified a synthesis that employs seed particles with twinning faults on which silver is deposited laterally along the twinning fault, leading to flat particles. The ratio of lateral and vertical growth is adjusted by the co-titration of further noble metal salts at nanomolar concentrations alongside the silver precursor.
View Article and Find Full Text PDFSci Rep
November 2024
Department of Inorganic Chemistry, Shahid Beheshti University, Tehran, 19839 69411, Iran.
Five metal dithiocarbamate complexes [M(PTHIQDTC)] [where PTHIQDTC is (S)-1-phenyl-1,2,3,4-tetrahydroisoquinoline dithiocarbamate anion and M is Ni(II) (1), Sn(II) (2), Hg(II) (3), Pb(II) (4) and Zn(II) (5)] were synthesized from the reaction of MX (X is Cl for 1-3 and OAc for 4-5) with ligand of triethylammonium (S)-1-phenyl-1,2,3,4-tetrahydroisoquinoline dithiocarbamate [EtNH][PTHIQDTC] in methanolic solution at room temperature. The five complexes were characterized by IR, H andC NMR, mass spectrometry, elemental analysis and TGA analysis. Recrystallization of [Zn(PTHIQDTC)] (5) in dimethylsulfoxide (DMSO) converts 5 to [Zn(PTHIQDTC)(DMSO)] (6).
View Article and Find Full Text PDFDalton Trans
November 2024
School of Chemistry, Monash University, Clayton, Melbourne, VIC 3800, Australia.
Five complexes of gallium derived from hydroxamic acids have been synthesised, characterised, and their anti-bacterial activity and mammalian cell toxicity established. These are three metal-organic complexes; [Ga(BPHA)] 1, [Ga(BHA-)] 2, [Ga(SHA-)(SHA-)] 3, and two heteroleptic organometallic complexes [GaMe(BPHA)] 4, and [GaMe(BHA-)] 5, along with the iron complex [Fe(BPHA)] 6 (BPHA-H = -benzoyl--phenylhydroxamic acid, BHA-H = phenylhydroxamic acid, and SHA-H = salicylhydroxamic acid). Solid-state structures of 1, 4-6 were identified by single-crystal X-ray crystallography.
View Article and Find Full Text PDFJ Chem Theory Comput
December 2024
Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States.
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