TY - JOUR
T1 - A series of vanadogermanates from 1D chain to 3D framework built by Ge-V-O clusters and transition-metal-complex bridges
AU - Zhou, Jian
AU - Zhang, Jie
AU - Fang, Wei Hui
AU - Yang, Guo Yu
PY - 2010/11/22
Y1 - 2010/11/22
N2 - Three novel extended vanadogermanates, {[(en)2Cd 2Ge8V12O40(OH)8(H 2O)][Cd(en)2]2}·6 H2O (1), {[Zn2(dap)3][Zn(dap)]2Ge6V 15O48(H2O)}[Zn(dap)2(H 2O)]2·3 H2O (2), and {[Cd 3(μ-dien)2(Hdien)2(H2O) 2]Ge4V16O42(OH)4(H 2O)}·2 H2O (3; en=ethylenediamine, dap=1,2-diaminopropane, dien=diethylenetriamine), have been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectroscopy, powder XRD, thermogravimetric analysis, and single-crystal XRD. Their Ge-V-O cluster anions are derived from the V18O42 cluster shell by replacing VO5 square pyramids with Ge 2O7 groups. Compound 1 exhibits a 1D sinusoidal chain built up from rare inorganic-organic hybrid dicadmium-substituted vanadogermanate {[Cd(en)]2V12O40(GeOH) 8(H2O)} clusters and [Cd(en)2] complexes. Compound 2 is the first example of a 2D network based on linkage of the unusual {Ge6V15O48(H2O)} clusters and two types of Zn complex fragments. Compound 3 is an unprecedented 3D framework built by {Ge4V16O42(OH)4(H2O)} clusters and rare trinuclear bridging complex cations [Cd3(μ- dien)2(Hdien)2(H2O)2]8+. Magnetic measurements illustrate that both 1 and 2 have antiferromagnetic exchange interactions between metal centers, whereas 3 exhibits ferrimagnetic behavior, which is rare in polyoxovanadate complexes. Extended vanadogermanates (VGOs) with 1-, 2- and 3D structures have been made under hydro(solvo)thermal conditions. The 1D chain is the first dicadmium-substituted VGO built from {Cd2Ge8V12O40(OH)8(H 2O)} clusters and transition-metal-complex (TMC) bridges (pictured), and the layer and framework are the first 2D/3D VGOs made of TMC linkers and {Ge6V15O48(H2O)}/{Ge 4V16O42(OH)4(H2O)} clusters.
AB - Three novel extended vanadogermanates, {[(en)2Cd 2Ge8V12O40(OH)8(H 2O)][Cd(en)2]2}·6 H2O (1), {[Zn2(dap)3][Zn(dap)]2Ge6V 15O48(H2O)}[Zn(dap)2(H 2O)]2·3 H2O (2), and {[Cd 3(μ-dien)2(Hdien)2(H2O) 2]Ge4V16O42(OH)4(H 2O)}·2 H2O (3; en=ethylenediamine, dap=1,2-diaminopropane, dien=diethylenetriamine), have been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectroscopy, powder XRD, thermogravimetric analysis, and single-crystal XRD. Their Ge-V-O cluster anions are derived from the V18O42 cluster shell by replacing VO5 square pyramids with Ge 2O7 groups. Compound 1 exhibits a 1D sinusoidal chain built up from rare inorganic-organic hybrid dicadmium-substituted vanadogermanate {[Cd(en)]2V12O40(GeOH) 8(H2O)} clusters and [Cd(en)2] complexes. Compound 2 is the first example of a 2D network based on linkage of the unusual {Ge6V15O48(H2O)} clusters and two types of Zn complex fragments. Compound 3 is an unprecedented 3D framework built by {Ge4V16O42(OH)4(H2O)} clusters and rare trinuclear bridging complex cations [Cd3(μ- dien)2(Hdien)2(H2O)2]8+. Magnetic measurements illustrate that both 1 and 2 have antiferromagnetic exchange interactions between metal centers, whereas 3 exhibits ferrimagnetic behavior, which is rare in polyoxovanadate complexes. Extended vanadogermanates (VGOs) with 1-, 2- and 3D structures have been made under hydro(solvo)thermal conditions. The 1D chain is the first dicadmium-substituted VGO built from {Cd2Ge8V12O40(OH)8(H 2O)} clusters and transition-metal-complex (TMC) bridges (pictured), and the layer and framework are the first 2D/3D VGOs made of TMC linkers and {Ge6V15O48(H2O)}/{Ge 4V16O42(OH)4(H2O)} clusters.
KW - germanium
KW - hydrothermal synthesis
KW - magnetic properties
KW - polyoxometalates
KW - vanadium
UR - http://www.scopus.com/inward/record.url?scp=78649243673&partnerID=8YFLogxK
U2 - 10.1002/chem.201001434
DO - 10.1002/chem.201001434
M3 - Article
AN - SCOPUS:78649243673
SN - 0947-6539
VL - 16
SP - 13253
EP - 13261
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 44
ER -