Layered V–B–O polyoxometalate nets linked by diethylenetriamine complexes with dangling amine groups

Abstract

Two layered V-B-O contained polyoxometalate (POM) net structures, denoted as SUT-12 and SUT-13, are reported here. SUT-12 was synthesized by the boric acid flux method, and it represents the first 2D structure constructed from the V6B20 vanadoborate cluster. SUT-13 was synthesized by the hydrothermal method and constructed from V12B6P12 vanadium borophosphate clusters. In both structures, the vanadoborate or vanadium borophosphate clusters were linked through in situ formed Zn(DETA)2 or Cu(DETA)2 complexes. Surprisingly, for all DETA molecules in the two metal complexes, there is one dangling amine group when it is coordinated to the metal. The phenomenon of the dangling amine group feature is abnormal and the Cu(DETA)2 complexes in SUT-13 were taken as an example and studied by the density functional theory (DFT) calculations in order to understand this unusual feature.

A Series of Aluminoborates Templated or Supported by Zinc–Amine Complexes

“…For example, diethylenetriamine (dien) can act as al igand to different metali ons, and at least eight configurations have been observed in Cu-dien complexes. [16] Employing MCs as structure-directing agents has proven an effective wayt om ake inorganic microporous structures. [17] In some cases, MCs can act as linkers to connect other structure-building units to form open frameworks.…”

“…Metal complexes (MCs) can adopt various configurations, charges, and hydrogen‐bonding sites. For example, diethylenetriamine (dien) can act as a ligand to different metal ions, and at least eight configurations have been observed in Cu–dien complexes 16. Employing MCs as structure‐directing agents has proven an effective way to make inorganic microporous structures 17.…”

Statistical Analysis of Main and Interaction Effects on Cu(II) and Cr(VI) Decontamination by Nitrogen–Doped Magnetic Graphene Oxide

“…Examples include the grafting of polyaniline 14 , EDTA 8 15 , and β-cyclodextrin 16 onto GO to improve its adsorption ability and selectivity for metal ions. As an amine derivative, diethylenetriamine (DETA) has two terminal amine groups and one central imine group, all of which are good donor groups for the formation of stable complexes with various metal ions 17 18 . Therefore, the introduction of DETA in a GO-based material would combine the unique properties of GO (large surface area and large number of functional groups) and the DETA (strong complexation ability to metal ions) 19 , providing good opportunities for application in the field of waste water treatment and metal ions recovery.…”

Functional polyoxometalates from solvothermal reactions of VOSO4 with tripodal alkoxides – a study on the reactivity of different “tris” derivatives

“…41 The same [M 6 O 18 ] motif is also known for other metals as part of larger architectures. [42][43][44][45] Nevertheless, the single bowl-shaped [V 6 O 18 ] fragment has not been published so far. There are other examples of similar [V 5 ] or [V 9 ] bowls.…”