0000000001307175
AUTHOR
Sudipta Chatterjee
Slow Magnetic Relaxation in a Co 2 Dy Trimer and a Co 2 Dy 2 Tetramer
The combination of Co(III) and Dy(III) with a compartmental Schiff base ligand (H 3 L = 3-[(2-Hydroxy-3-methoxy-benzylidene)-amino]-propane-1,2-diol), presenting three different coordinating pockets, has allowed the synthesis of two novel Co(III)-Dy(III) complexes: [Co 2 Dy(HL) 4 ]NO 3 ·2CH 3 CN ( 1 ), a rare example of trinuclear linear Co III 2 Dy III complex (and the first with slow relaxation of magnetization in absence of a DC field) and [Co 2 Dy 2 (μ 3 -OH) 2 (HL) 2 (OAc) 6 ]·4.6H 2 O ( 2 ), the first tetranuclear Co III 2 Dy III 2 cluster with a rhomb-like structure where the Co(III) ions are connected along the short diagonal of the rhomb. 1 presents two different relaxation process…
An intramolecular antiferromagnetically coupled pentanuclear homoleptic Mn(II) cluster: Synthesis, crystal structure, spectral and magnetic property
Abstract A pyrazole based ditopic ligand 5(E)-5-methyl-N′-(pyridin-2-ylmethylene)-1H-pyrazole-3-carbohydrazide (PzOPyH), prepared by the reaction between 5-methylpyrazole-3-carbohydrazide and pyridine-2-carbaldehyde, reacts with Mn(ClO4)2·6H2O to form a self-assembled, antiferromagnetically coupled alkoxide bridged pentanuclear Mn(II) homoleptic cluster complex [Mn5(PzOPy)6](ClO4)4 (1). The complex has a central Mn5(μ-O6) core involving six ligand molecules. This pentanuclear core has a trigonal bipyramidal arrangement of Mn(II) atoms, where, the axial metal centers (Mn2 and Mn_2) have a N3O3 chromophore and the equatorial centers (Mn1, Mn_1 and Mn3) have N4O2 chromophore with distorted oct…
Homo and heterometallic rhomb-like Ni4 and Mn2Ni2 complexes
Abstract Two new polynuclear complexes with hydroxyl-rich Schiff base ligand 3-[(2-Hydroxy-benzylidene)-amino]-propane-1,2-diol (H3L), namely [NiII2(HL)(H2L)(SCN)]2·DMF (1) and [MnIII2NiII2(HL)2(L)2] (2) have been synthesized and characterized by single crystal X-ray diffraction, elemental analyses, FTIR, UV–Vis spectroscopy and variable temperature magnetic susceptibility measurements. The X-ray refinements reveal that both compounds present defective rhomb-like dicubane central cores (Ni4 in 1 and Mn2Ni2 in 2). Magnetic susceptibility measurements indicate the presence of overall antiferromagnetic exchange interactions in 1 along the side connected by a N and O atoms (J1 = −43.6 cm−1) and…
CCDC 1981327: Experimental Crystal Structure Determination
Related Article: Ritwik Modak, Yeasin Sikdar, Carlos J. Gómez‐García, Samia Benmansour, Sudipta Chatterjee, Sanchita Goswami|2021|Chem.Asian J.|16|666|doi:10.1002/asia.202001468
CCDC 917971: Experimental Crystal Structure Determination
Related Article: Ritwik Modak, Yeasin Sikdar, Senjuti Mandal, Carlos J. Gómez-García, Samia Benmansour, Sudipta Chatterjee, Sanchita Goswami|2014|Polyhedron|70|155|doi:10.1016/j.poly.2013.12.031
CCDC 929633: Experimental Crystal Structure Determination
Related Article: Ritwik Modak, Yeasin Sikdar, Senjuti Mandal, Carlos J. Gómez-García, Samia Benmansour, Sudipta Chatterjee, Sanchita Goswami|2014|Polyhedron|70|155|doi:10.1016/j.poly.2013.12.031
CCDC 1985127: Experimental Crystal Structure Determination
Related Article: Ritwik Modak, Yeasin Sikdar, Carlos J. Gómez‐García, Samia Benmansour, Sudipta Chatterjee, Sanchita Goswami|2021|Chem.Asian J.|16|666|doi:10.1002/asia.202001468