0000000001302348
AUTHOR
Hiroshi Sakiyama
showing 9 related works from this author
Ligand mediated structural diversity of copper(II)-azido moiety: Synthesis, structure and magnetic study
2022
Abstract Two copper azido complexes [Cu4(L1)4(µ1,1-N3)3(N3)] (1) and [{Cu2(L2)(N-benzylen)(µ1,1-N3)3(µ1,1,3-N3(N3)]n (2) have been synthesized by the reaction of aqueous solution of sodium azide to a methanolic solution of copper perchlorate hexahydrate and corresponding Schiff-base ligands. Schiff bases HL1 and HL2 act as blocking coligands are derived from the 1:1 condensation of N-benzyl ethylenediamine with Salicyldehyde and 2-hydroxy-5-chloroacetophenone respectively (N-benzylen is the N-benzyl ethylenediamine). These two complexes are characterized by the elemental analysis, FT-IR, single crystal X-ray diffraction, powder XRD and also TGA. Single crystal X-ray structural study reveals…
Double azido-bridged and mixed-bridged binuclear copper(II) and nickel(II) compounds with N,N,O-donor Schiff bases: Synthesis, structure, magnetic an…
2015
Abstract Two dinuclear complexes μ1,1-azido bridged [Cu(L1)(N3)]2 (1) and μ-phenoxo, μ1,1-azido bridged [Ni2(L2)2(μ1,1-N3)(N3) H2O] (2) bearing HL1 and HL2 as a blocking co-ligands produced by the 1:1 condensation of N-benzyl ethylenediamine with ortho-hydroxy acetophenone and N-methyl propanediamine with 3-methoxy salicylaldehyde respectively, have been synthesized and successfully characterized by elemental analyses, IR and electronic spectroscopy, single-crystal X-ray diffraction, variable temperature magnetic study and DFT studies. X-ray crystal structures of 1 reveal that the Cu(II) ion displays a five-coordinate square pyramidal coordination with a centro-symmetric μ1,1-azido bridging…
Hexacyanocobaltate(III) Anions as Precursors of Co(II)−Ni(II) Cyano-Bridged Multidimensional Assemblies: Hydrothermal Syntheses, Crystal and Powder …
2005
Three novel cyanide-bridged heterobimetallic coordination polymers have been synthesized by hydrothermal routes, in superheated water solutions, by using K3[Co(CN)6], NiCl2.6H2O, and alpha-diimine ligands: [Ni(CN)4Co(phen)] (1; phen = 1,10-phenanthroline), [Ni(CN)4Co(2,2'-bipy)] (2; 2,2'-bipy = 2,2'-bipyiridine), and [Ni(CN)4Co(2,2'-bipy)2] (3). The isostructural compounds 1 and 2 contain a two-dimensional network with Co(II) centers octahedrally coordinated by one chelating 2,2'-bipy ligand and four cyanide groups of four distinct [Ni(CN)4]2-, through crystallographically equivalent, bridging units. Compound 3 contains one-dimensional zigzag chains in which the Co(II) ion is coordinated by…
Quantitative estimation of the antiferromagnetic interaction between Cu(II) and Sm(III) in two dimensional heterometallic coordination polymer with i…
2013
Abstract The syntheses, structure and magnetic property of a novel two dimensional 3d–4f coordination polymer 2∞[CuSmL(NO3)2(IN)], 1 (L2− = N, N′- propylenedi (3-ehoxysalicylideneiminato), the dianion of the Schiff base obtained from the 2:1 condensation of 3-ethoxysalicylaldehyde with 1,3-propanediamine, IN− = the isonicotinate ion) has been reported. The heterobinuclear units are connected through exo-bidentate ligands IN−, leading to an extended 2D structure. A fit of the magnetic susceptibility data yields gCu = 2.109, gSm = 0.476, JCuSm = − 0.893 cm− 1, θ = − 3.37 K, and TIP = 0.001257 emu K mol− 1 with a good discrepancy factor of Rχ = 4.4 × 10− 5. This is the first quantitative esti…
CCDC 937393: Experimental Crystal Structure Determination
2013
Related Article: Sandip Saha, Debabrata Biswas, Partha Pratim Chakrabarty, Dieter Schollmeyer, Atish Dipankar Jana, Hiroshi Sakiyama, Masahiro Mikuriya|2013|Inorg.Chem.Commun.|36|212|doi:10.1016/j.inoche.2013.08.032
CCDC 2021182: Experimental Crystal Structure Determination
2021
Related Article: Mrinmoy Ghosh, Partha Pratim Chakrabarty, Atish Dipankar Jana, Dieter Schollmeyer, Hiroshi Sakiyama, Masahiro Mikuriya, Rakesh Debnath, Paula Brand��o, Dasarath Mal, Sandip Saha|2022|Inorg.Chim.Acta|531|120713|doi:10.1016/j.ica.2021.120713
CCDC 998456: Experimental Crystal Structure Determination
2015
Related Article: Partha Pratim Chakrabarty, Sanjib Giri, Dieter Schollmeyer, Hiroshi Sakiyama, Masahiro Mikuriya, Ananda Sarkar, Sandip Saha|2015|Polyhedron|89|49|doi:10.1016/j.poly.2014.12.033
CCDC 2021183: Experimental Crystal Structure Determination
2021
Related Article: Mrinmoy Ghosh, Partha Pratim Chakrabarty, Atish Dipankar Jana, Dieter Schollmeyer, Hiroshi Sakiyama, Masahiro Mikuriya, Rakesh Debnath, Paula Brand��o, Dasarath Mal, Sandip Saha|2022|Inorg.Chim.Acta|531|120713|doi:10.1016/j.ica.2021.120713
CCDC 998455: Experimental Crystal Structure Determination
2015
Related Article: Partha Pratim Chakrabarty, Sanjib Giri, Dieter Schollmeyer, Hiroshi Sakiyama, Masahiro Mikuriya, Ananda Sarkar, Sandip Saha|2015|Polyhedron|89|49|doi:10.1016/j.poly.2014.12.033