Hydrothermal synthesis and structure of a novel hybrid germanium vanadate: (2,2 ′ -bpy) 2 (V V O 2 ) 2 (H 2 GeO 4 ) · 6H 2 O

Zheng, Shou‐Tian; Zhang, Jie; Yang, Guo‐Yu

doi:10.1016/j.inoche.2004.05.007

Cited by 3 publications

(2 citation statements)

References 25 publications

(31 reference statements)

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“…Unlike the silicates, which exist exclusively in tetrahedral sites, germanates can adopt a variety of four-, five-, and six-coordinate environments. , They also have a tendency to form large multinuclear units with complex structures. Despite these interesting structural properties, they are relatively unexplored relative to the silicates, except as potential new open-framework analogues to zeolites. , Interestingly, vanadium germanates also form a series of unusual compounds whereby the vanadium and germanium ions can act as both building block and coordinated metal ion. − …”

Section: Introductionmentioning

confidence: 99%

Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl

et al. 2017

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Crystals of ASr 2 V 3 O 3 (Ge 4 O 13 )Cl, A = Na, K, were synthesized from high-temperature hydrothermal brines, and their structure and magnetic properties were investigated. These materials present a unique combination of a salt inclusion lattice, a polar crystal structure, and isolated V 4+ (S = 1/2) trimer magnetic clusters. The structures consist of a trimeric V 3 O 13 unit based on V 4+ (S = 1/2), having rigorous 3fold symmetry with a short V−V separation of 3.325(3) Å. The trinuclear V 4+ units are formed by three edge shared VO 6 octahedra sharing a central μ 3 -oxygen atom, which also imparts a polar sense on the structure. The V 3 O 13 units are isolated from one another by tetranuclear Ge 4 O 13 units, which are similarly arranged in a polar fashion, providing a unique opportunity to study the magnetic behavior of this triangular d 1 system as a discrete unit. Magnetization measurements indicate spin-1/2 per V atom at high temperature, and spin-1/2 per V 3 trimer at low temperature, where two V moments in each triangle are antiferromagnetically aligned and the third remains paramagnetic. The crossover between these two behaviors occurs between 20 and 100 K and is well-described by a model incorporating strong antiferromagnetic intra-trimer interactions and weak but nonzero inter-trimer interactions. More broadly, the study highlights the ability to obtain new materials with interesting structure−property relationships via chemistry involving unconventional solvents and reaction conditions.

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Section: Introductionmentioning

confidence: 99%

Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl

et al. 2017

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“…We have obtained the Eu Addition of nitrogen-containing heterocyclic organic molecules such as 2,2ʹ-bipyridine into composition of coordination compounds of germanium(IV) with citric acid can modify its properties. Similar compound with tris(oxalato-O,O')germanate anion (Hbipy) 2 [Ge(C 2 O 4 ) 3 ] has been isolated after a mild hydrothermal synthesis and its structure has been elucidated [11]. The chelate [GeCl(bipy)(HCit)]·2.5CH 3 CN has also been synthesized by the reaction between the adduct [GeCl 4 (bipy)] and citric acid in acetonitrile solution [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Characteristics of Bis(Citrate)Germanates(IV) (Hbipy)2[Ge(HCit)2]·2H2 and [CuCl(bipy)2]2[Ge(HCit)2]·8H2O

Сейфулліна¹,

Марцинко²,

Chebanenko³

et al. 2016

ChemJMold

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Hydrothermal Synthesis, Structural Characterisations, and Photoluminescence Properties of Four Inorganic‐Organic Hybrid Compounds in the Indium/Gallium Iodate Family

Liu

et al. 2008

Eur J Inorg Chem

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Four inorganic‐organic hybrid compounds with the formulae In2(IO3)6(H2O)(2,2′‐bipy)·H2O (1), In2(IO3)6(H2O)(1,10‐phen)·H2O (2), Ga(IO3)3(2,2′‐bipy)·HIO3 (3) and Ga(IO3)3(1,10‐phen)·H2O (4) were hydrothermally synthesised at 100 °C over 7 d and subsequently characterised by single‐crystal X‐ray diffraction. The bidentate diamine ligands 2,2′‐bipy and 1,10‐phen in the In/I/O system give rise to the compounds In2(IO3)6(H2O)(2,2′‐bipy)·H2O and In2(IO3)6(H2O)(1,10‐phen)·H2O which crystallise in the monoclinic space group P21/c. Using the same bidentate diamine ligands, namely 2,2′‐bipy and 1,10‐phen, in the Ga/I/O system led to the formationof Ga(IO3)3(2,2′‐bipy)·HIO3 and Ga(IO3)3(1,10‐phen)·H2O which crystallise in the monoclinic space group P21/n. Both, In2(IO3)6(H2O)(2,2′‐bipy)·H2O and In2(IO3)6(H2O)(1,10‐phen)·H2O possess 2D layered structures, with the former consisting of [In(H2O)(IO3)5]2– clusters and [In(IO3)(2,2′‐bipy)]2+ chains and the latter consisting of [In(H2O)(IO3)5]2– clusters and [In(IO3)(1,10‐phen)]2+ chains. Compound Ga(IO3)3(2,2′‐bipy)·HIO3 is a 1D ribbon built up from [IO3] pyramids, [GaO4N2] octahedra and distinct [I2O6] units and featuring interesting left and right helical chains. Compound Ga(IO3)3(1,10‐phen)·H2O has a 1D chain‐like structure constructed from the alternation of [GaO4N2] octahedra and [IO3] pyramids. By comparatively studying the photoluminescence properties of these compounds, we may conclude that the photoluminescence originates from ligand‐centred π‐π* transitions. The synthesised products were further characterised by powder X‐ray diffraction, thermogravimetric analysis, IR spectroscopy, ICP and elemental analysis.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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Hydrothermal synthesis and structure of a novel hybrid germanium vanadate: (2,2 ′ -bpy) 2 (V V O 2 ) 2 (H 2 GeO 4 ) · 6H 2 O

Cited by 3 publications

References 25 publications

Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl

Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl

Synthesis and Structural Characteristics of Bis(Citrate)Germanates(IV) (Hbipy)2[Ge(HCit)2]·2H2 and [CuCl(bipy)2]2[Ge(HCit)2]·8H2O

Hydrothermal Synthesis, Structural Characterisations, and Photoluminescence Properties of Four Inorganic‐Organic Hybrid Compounds in the Indium/Gallium Iodate Family

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Hydrothermal synthesis and structure of a novel hybrid germanium vanadate: (2,2 ′ -bpy) 2 (V V O 2 ) 2 (H 2 GeO 4 ) · 6H 2 O

Cited by 3 publications

References 25 publications

Polar Materials with Isolated V4+ S = 1/2 Triangles: NaSr2V3O3(Ge4O13)Cl and KSr2V3O3(Ge4O13)Cl

Polar Materials with Isolated V4+ S = 1/2 Triangles: NaSr2V3O3(Ge4O13)Cl and KSr2V3O3(Ge4O13)Cl

Synthesis and Structural Characteristics of Bis(Citrate)Germanates(IV) (Hbipy)2[Ge(HCit)2]·2H2 and [CuCl(bipy)2]2[Ge(HCit)2]·8H2O

Hydrothermal Synthesis, Structural Characterisations, and Photoluminescence Properties of Four Inorganic‐Organic Hybrid Compounds in the Indium/Gallium Iodate Family

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Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl

Polar Materials with Isolated V⁴⁺ S = 1/2 Triangles: NaSr₂V₃O₃(Ge₄O₁₃)Cl and KSr₂V₃O₃(Ge₄O₁₃)Cl