Sasankasekhar Mohanta

Bio: Sasankasekhar Mohanta is an academic researcher from Tamkang University. The author has contributed to research in topics: Hydrogen bond & Intermolecular force. The author has an hindex of 1, co-authored 2 publications receiving 42 citations.

Antiferro- and Ferromagnetic Behaviors of Two New µ1,3-N3 and µ1,1-N3 Bridged Dinuclear Nickel(II) Complexes with 2,6-Bis(2-pyridyl)-4(1H)-pyridone and 2,6-Dimethyl-2,3-bis (2-pyridyl)quinoxaline Ligands

Abstract: Two new N3-bridged dinuclear nickel(II) complexes, [Ni(ddqx)2 (µ1,3-N3)]2(ClO4)2⋅8CH3OH 1 and [Ni(tpd)(µ1,1-N3)(H2O)]2 2, (ddqx = 2,6-dimethyl-2,3-bis(2-pyridyl)quinoxaline and Htpd = 4-terpyridone = 2,6-bis(2-pyridyl)-4(1H)-pyridone), have been synthesized. Complex 1 crystallizes in the orthorhombic system with Ccca space group; the structure consists of isolated dimer and each Ni(II) atom is coordinated by two bidentate ddqx ligands and two end-to-end µ1,3-N3 groups. Complex 2 crystallizes in monoclinic P21/n space group; the structure consists of hydrogen-bonding linked 2-D chain of dinuclear Ni(II) complex, and each Ni(II) atom is coordinated by tridentate tpd ligand, water molecule and bridging µ1,1-N3 ligand; the hydrogen bonding formed between the hydrogen atom of H2O and oxygen atom of tpd ligand. Magnetic susceptibility data, measured from 2-300 K, reveal that complex 1 exhibits antiferromagnetic interaction with J = −29 cm-1, D = 10 cm-1, g = 2.0, whereas complex 2 exhibits ferromagnetic interaction with J = 17 cm-1, D = −8.5 cm-1, g = 2.18. The magneto-structural correlation has been discussed.

Study of the luminescent and magnetic properties of a series of heterodinuclear [Zn(II)Ln(III)] complexes.

Abstract: Herein, we report the synthesis, structural investigation, and magnetic and photophysical properties of a series of 13 [ZnIILnIII] heterodinuclear complexes, which have been obtained employing a Sc...

Syntheses, Structures, and Magnetic Properties of Diphenoxo-Bridged MIILnIII Complexes Derived from N,N‘-Ethylenebis(3-ethoxysalicylaldiimine) (M = Cu or Ni; Ln = Ce−Yb): Observation of Surprisingly Strong Exchange Interactions

Abstract: A series of heterodinuclear CuIILnIII and NiIILnIII complexes, [MIIL1LnIII(NO3)3] (M = Cu or Ni; Ln = Ce−Yb), with the hexadentate Schiff base compartmental ligand N,N‘-ethylenebis(3-ethoxysalicylaldiimine) (H2L1) have been synthesized and characterized. The X-ray crystal structure determinations of 13 of these compounds reveal that they are all isostructural. All of these complexes crystallize with the same orthorhombic P212121 space group with closely similar unit cell parameters. Typically, the structure consists of a diphenoxo-bridged 3d−4f dinuclear core, self-assembled to two dimensions due to the intermolecular nitrate···copper(II) or nitrate···nickel(II) semicoordination and weak C−H···O hydrogen bonds. Despite that, the metal centers of the neighboring units are well separated (the ranges of the shortest intermolecular contacts (A) are (M···M) 7.46−7.60, (Ln···Ln) 8.56−8.69, and (M···Ln) 6.12−6.20). Variable-temperature (5−300 K) magnetic susceptibility measurements of all the complexes have been...

Syntheses, structures, and magnetic properties of mononuclear CuII and tetranuclear CuII3MII (M = Cu, Co, or Mn) compounds derived from N,N'-ethylenebis(3-ethoxysalicylaldimine): cocrystallization due to potential encapsulation of water.

Abstract: Syntheses, structures, and magnetic properties of one mononuclear inclusion compound [CuIIL1⊂(H2O)] (1) and three tetrametal systems of the composition [{CuIIL1}2{CuIIL1MII(H2O)3}](ClO4)2(M = Cu (2), M = Co (3), M = Mn (4)) derived from the hexadentate Schiff base compartmental ligand N,N‘-ethylenebis(3-ethoxysalicylaldimine) (H2L1) have been described. Compounds 1 and 2 crystallize in orthorhombic Pbcn and monoclinic P21/c systems, respectively, and the space group of the isomorphous compounds 3 and 4 is monoclinic C2/c. The water molecule in 1 is encapsulated in the vacant O4 compartment because of the hydrogen bonding interactions with the ether and phenolate oxygens, resulting in the formation of an inclusion product. The structures of 2−4 consist of the [CuIIL1MII(H2O)3]2+ cation and two mononuclear [CuIIL1] moieties. In the dinuclear [CuIIL1MII(H2O)3]2+ cation, the metal centers are doubly bridged by the two phenolate oxygens. The second metal center, MII (Cu in 2, Co in 3, and Mn in 4), in the [CuI...