• Aloke Kumar Ghosh

Articles written in Journal of Chemical Sciences

• Rhomboidal [Cu4] coordination cluster from self-assembly of two asymmetric phenoxido-bridged Cu2 units: Role of $\mu_{1,1}$-azido clips

The coordination cluster [Cu2(𝜇-OMe)($\mu_{1,1}$-N3)(𝜇-bcp)(N3)]2 (1; Hbcp = 2,6-bis(2-benzoyl-4-chloro-phenylimino)-methyl)-4-methylphenol, forming a new member within the rapidly growing family of Cu4 cluster complexes, has been synthesized and structurally characterized by X-ray crystallography. The complex crystallizes in the monoclinic system, space group P21/𝑐, with unit cell parameters a = 14.620(7) Å, b = 17.923(8) Å, c = 15.008(7) Å, 𝛽 = 115.815(14)° and Z = 2. It is the first example of a rhomboidal [Cu4] compound formed from $\mu_{1,1}$-azido clipping of two methoxido bridged [Cu2] complexes showing asymmetric coordination from benzophenone oxygen atoms and terminal azido groups.

• Crystal growth, structure and magnetic properties of Sm3Ni5Al19: A compound in the Sm$_{2n+m}$Ni$_{4n+m}$Al$_{15n+4m}$ homologous series

Sm3Ni5Al19 was obtained as large rod shaped single crystals from reactive aluminium flux. Single crystal X-ray diffraction suggests that Sm3Ni5Al19 crystallizes in the Gd3Ni5Al19 structure type, orthorhombic space group $Cmcm$ and lattice constants 𝑎 = 4.0974(1) Å, 𝑏 = 16.0172(6)Å and 𝑐 = 27.0774(10) Å. Sm3Ni5Al19 is a member of the Sm$_{2n+m}$Ni$_{4n+m}$Al$_{15n+4m}$ series with n = 1 and m = 1. The crystal structure of Sm3Ni5Al19 consists of SmNiAl4 and Sm2Al4Al15 slabs intergrown along the 𝑏-axis. Magnetic susceptibility data on Sm3Ni5Al19 confirms the paramagnetic nature with a complicated magnetic ordering below 18 K. The inverse susceptibility data follows modified Curie-Weiss law above 150 K with effective magnetic moment 1.3 $\mu_{\text{B}}$/Sm atoms suggests trivalent Sm atoms.

• # Journal of Chemical Sciences

Volume 134, 2022
All articles
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• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019