Single-Step Preparation of the Mixed Ba<sup>II</sup>–Nb<sup>V</sup> Oxides from a Heteropolynuclear Oxalate Complex

Jurić, Marijana; Popović, Jasminka; Šantić, Ana; Molčanov, Krešimir; Brničević, Nevenka; Planinić, Pavica

doi:10.1021/ic301888p

Cited by 33 publications

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References 46 publications

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“…[15][16][17][18][19][20][21][22][23] In our recently published articles, we reported the use of the new compound {Ba 2 O 9 through thermal decomposition at a specific temperature. [21,22] The molecular-to-materials conversion of the isostructural Ba II …”

Section: Introductionmentioning

confidence: 99%

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

et al. 2014

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The heterodimetallic compounds {[CaCr 2 (L) 2 (C 2 O 4 ) 4 ]·xH 2 O} n [L = 2,2Ј-bipyridine (bpy), x = 0.83 (1); L = 1,10-phenanthroline (phen), x = 0.33 (2)] were synthesized and characterized by IR spectroscopy, X-ray diffraction and magnetic measurements. The crystal structure of 2 is reported: the chelation of a [Cr(phen)(C 2 O 4 ) 2 ] -units towards Ca cations results in 1D double zigzag chains. The ability of 1 and 2 to act as singlesource precursors for the formation of Ca-Cr oxides is explored by thermal analysis, powder X-ray diffraction and IR

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Section: Introductionmentioning

confidence: 99%

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

et al. 2014

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“…5 are not isolated in the solid state, analogues Nb-containing compound (NH4)3[NbO(C2O4)3]•H2O was used as a reference. 41 Due to the distorted octahedral geometry of chromium(III), the lowest 4 T2g← 4 A2g transition is split into 4 Eg← 4 B1g and 4 B2g← 4 B1g, and the corresponding bands are located at 511 and 450 nm, respectively. Similarly, the second spin-allowed transition 4 T1g← 4 A2g is also split, appearing at 399 and 420 nm.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

First crystal structures of oxo-bridged [Cr^IIITa^V] dinuclear complexes: spectroscopic, magnetic and theoretical investigations of the Cr–O–Ta core

et al. 2018

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“…An analogous oxalate anion of niobiumĲV), in which the niobium atom is doubly bonded to an oxo-oxygen atom, is found in various heterometallic niobium complexes. [22][23][24] Among them, very similar compounds to the presented tantalum species, i.e. ĳNiĲbpy) 3 ] 2 ĳNbOĲC 2 O 4 ) 3 ]ClĴnH 2 O (n = 11, 12), have also been prepared and structurally characterized.…”

Section: Crystal Transformationsmentioning

confidence: 99%

Crystal disassembly and reassembly of heterometallic Ni^II–Ta^Voxalate compounds

2015

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Four new complexes, ĳNiĲbpy) 3 ] 2 ĳTaOĲC 2 O 4 ) 3 ]ClĴ11H 2 O (1), ĳNiĲbpy) 3 ] 2 ĳTaOĲC 2 O 4 ) 3 ]ClĴ12H 2 O (2), ĳ{NiĲbpy) 2 } 2 Ĳμ-C 2 O 4 )] 1.5 ĳTaOĲC 2 O 4 ) 3 ]Ĵ13H 2 O (3) and ĳ{NiĲbpy) 2 } 2 Ĳμ-C 2 O 4 )]ĲNO 3 ) 2 ĴH 2 C 2 O 4 (4) (bpy = 2,2′-bipyridine), have been prepared and investigated by IR spectroscopy and thermal analysis; compounds 1, 2 and 4 have been characterized by single-crystal X-ray diffraction. In these Ni-Ta oxalate systems the crystal disassembly/reassembly process was observed. Stick-like single crystals of 1 disassemble in the mother liquor and again reassemble to form polyhedral single crystals of 2 having an additional water molecule.Compounds 1 and 2 crystallize in different crystal systems (P2 1 /c vs. P2 1 2 1 2 1 ); nevertheless they exhibit very similar crystal packing of the constituent structural units: the ĳNiĲbpy) 3 ] 2+ cations are involved in a specific intermolecular contact, quadruple aryl embrace (QAE), in a honeycomb 2D hexagonal network, whereas the ĳTaOĲC 2 O 4 ) 3 ] 3− anions and water molecules constitute a 3D hydrogen bonding sublattice. A survey of the Cambridge Structural Database was performed in order to find similar QAE contacts within the crystal structures containing the ĳMĲbpy) 3 ] n+ cation. In a Ni-Ta oxalate system with a different ĳ{NiĲbpy) 2 } 2 Ĳμ-C 2 O 4 )] 2+ cation environment, compound 3 was obtained. The disassembly/reassembly process occurs in the mother liquor containing crystals of 3, and after two weeks it yields crystals of 4 with different constituent units: the homodinuclear ĳ{NiĲbpy) 2 } 2 Ĳμ-C 2 O 4 )] 2+ cation remains unchanged, whereas the Ĳoxalato)tantalateĲV) anion decomposes during disassembly of 3 and NO 3 − takes its place as the counteranion in the reassembled crystal form of 4.

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Single-Step Preparation of the Mixed Ba^II–Nb^V Oxides from a Heteropolynuclear Oxalate Complex

Cited by 33 publications

References 46 publications

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

First crystal structures of oxo-bridged [Cr^IIITa^V] dinuclear complexes: spectroscopic, magnetic and theoretical investigations of the Cr–O–Ta core

Crystal disassembly and reassembly of heterometallic Ni^II–Ta^Voxalate compounds

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Single-Step Preparation of the Mixed BaII–NbV Oxides from a Heteropolynuclear Oxalate Complex

Cited by 33 publications

References 46 publications

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

1D Heterometallic Oxalate Compounds as Precursors for Mixed Ca–Cr Oxides – Synthesis, Structures, and Magnetic Studies

First crystal structures of oxo-bridged [CrIIITaV] dinuclear complexes: spectroscopic, magnetic and theoretical investigations of the Cr–O–Ta core

Crystal disassembly and reassembly of heterometallic NiII–TaVoxalate compounds

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Single-Step Preparation of the Mixed Ba^II–Nb^V Oxides from a Heteropolynuclear Oxalate Complex

First crystal structures of oxo-bridged [Cr^IIITa^V] dinuclear complexes: spectroscopic, magnetic and theoretical investigations of the Cr–O–Ta core

Crystal disassembly and reassembly of heterometallic Ni^II–Ta^Voxalate compounds