Abstract
Two new inorganic-organic hybrid compounds Na2(C 3N2H12)4{[Ni5(OH) 3(H2O)4(CH3CO2)][Si 2W18O66]}·12.5H2O (1) and (C3N2H12)3{[CoII 2CoIII4(OH)5(H2O) 2(CH3CO2)][Si2W18O 66]}·6H2O·(C3N2H 10) (2), based on lacunary polyoxometalates and high-nuclear transition-metal clusters, have been synthesized by a new method (solvothermal method). Single crystal XRD, magnetic measurements, nonlinear-optical (NLO) measurements, thermogravimetric (TG) measurements, and IR spectra were performed to analyze the structures and properties of 1 and 2. XRD analyses reveal that compound 1 consists of an open Wells-Dawson anion [Si2W 18O66]16-, a five-nuclear cationic cluster [Ni5(OH)3(H2O)4(CH 3CO2)]6+, free Na+ cations, and protonated 1,3-diaminopropanes. Compound 2 has a similar structure to 1, while a six-nuclear cationic cluster [CoII2CoIII 4(OH)5(H2O)2(CH3CO 2)]10+ replaces the five-nuclear cationic cluster [Ni 5(OH)3(H2O)4(CH3CO 2)]6+ in 1. Magnetic susceptibility measurements indicate antiferromagnetic interactions in 1, and the chirality of compound 2 may bring potential properties of catalysis and optical nonlinearity.
Original language | English |
---|---|
Pages (from-to) | 8454-8459 |
Number of pages | 6 |
Journal | Dalton Transactions |
Volume | 42 |
Issue number | 23 |
DOIs | |
State | Published - 21 Jun 2013 |