Issue 5, 2020

A novel sandwich shaped {Co III2Co II12Mo V24} cluster with a Co II4 triangle encapsulated in two capped CoIIICo II4Mo V12O40 fragments

Abstract

A novel discrete {Co14Mo24} nanoscale cluster, {CoIII2CoII10Cl2(dpbt)3(H2O)2[CoIIMoV12O31(CH3O)9]2}·24CH3OH (1) (here, dpbt = 5,5′-di(pyridin-2-yl)-3,3′-bi(1,2,4-triazole)), with a triangular Co4 core encapsulated in two novel capped Co-substituted Keggin-type Co5Mo12O40 anions, has been isolated from alkaline methanol solution. The high-resolution electrospray ionization mass spectrum (HRESI-MS) of microcrystalline 1 in MeOH/CH2Cl2 (v : v = 2 : 1) was recorded. Two prominent overlapping peaks in the range of m/z = 2740–2840 and 1820–1880 for the discrete fragments of [CoIII2CoII12MoV24O62Cl2(dpbt)3(H2O)2(CH3O)x(OH)18−x-2H]2− (x = 9–18, F1) and [CoIII2CoII12MoV24O62Cl2(dpbt)3(H2O)2(CH3O)x(OH)19−x-2H]3− (x = 6–13, F2), respectively, are obtained, confirming the {Co14Mo24} composition in 1. In addition, weak anti-ferromagnetic interactions in 1 are observed.

Graphical abstract: A novel sandwich shaped {CoIII2CoII12MoV24} cluster with a CoII4 triangle encapsulated in two capped CoIIICoII4MoV12O40 fragments

Supplementary files

Article information

Article type
Communication
Submitted
19 Nov 2019
Accepted
31 Dec 2019
First published
02 Jan 2020

Dalton Trans., 2020,49, 1375-1379

A novel sandwich shaped {CoIII2CoII12MoV24} cluster with a CoII4 triangle encapsulated in two capped CoIIICoII4MoV12O40 fragments

H. Li, H. Pang, P. Yao, F. Huang, H. Bian and F. Liang, Dalton Trans., 2020, 49, 1375 DOI: 10.1039/C9DT04459K

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