Mahnke, Lisa K., Warzok, Ulrike, Lin, Mengxi, Näther, Christian, Schalley, Christoph A. and Bensch, Wolfgang (2018) New Water-Soluble Cluster Compound {Zn(en)3 }3 [V15 Sb6 O42 (H2 O)]⋅ (Ethylenediamine)3 ⋅10 H2 O as a Synthon for the Generation of Two New Antimonato Polyoxovanadates. Chemistry - A European Journal, 24 . DOI 10.1002/chem.201705732.

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Abstract

A new antimonato polyoxovanadate {Zn(en)3}3[V15Sb6O42(H2O)]⋅3 en⋅10 H2O (en=ethylenediamine) synthesized under hydrothermal conditions exhibits remarkable solubility in water. Electrospray ionization mass spectrometry (ESI‐MS) investigations on an aqueous solution demonstrate that the cluster core remains fully intact for 72 h. At longer times, slow transformation into a {V14Sb8O42} cluster is observed. The conversion reaches 50 % after 14 days and is complete after approximately 20 days. The rate of this {V15Sb6}→{V14Sb8} cluster transformation is significantly increased in the presence of ammonium acetate. Applying the new compound as a synthon in the presence of 1,10‐phenanthroline (phen) led to crystallization of {Zn(phen)3}2[Zn(en)2V15Sb6O42(H2O)]⋅23 H2O after a short reaction time, whereas addition of Sb2O3 led to fast crystallization of {(Zn(en)2(H2O)2)(Zn(en)2)}[Zn(en)2V15Sb6O42(H2O)] ⋅8.5 H2O. In the crystal structure of {Zn(en)3}3 [V15Sb6O42(H2O)]⋅3 en⋅10 H2O, the en molecules are seen to be attached to the cluster anion through Sb−N bonds. In the structures of the two new compounds obtained, the [V15Sb6O42(H2O)]6− anions are expanded by Zn2+‐centered complexes through Zn−O−V bond formation.

Document Type:	Article
Keywords:	cluster compounds, crystal structure, ESI-MS, solvothermal Synthesis, water-soluble precursor
Research affiliation:	Kiel University Kiel University > Kiel Marine Science OceanRep > The Future Ocean - Cluster of Excellence
Refereed:	Yes
Open Access Journal?:	No
Publisher:	American Medical Association
Projects:	Future Ocean
Date Deposited:	05 Apr 2018 10:46
Last Modified:	23 Sep 2019 23:58
URI:	https://oceanrep.geomar.de/id/eprint/42608

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