Abstract
Two enantiomerically pure polytungstates, Na2[(CH 3)2NH2]3{Na[CeIII(H 2O)(CH3CH2OH)(l-tartH3)(H 2Si2W19O66)]}·3.5H 2O (l-1) and [(CH3)2NH2] 7{Na[CeIII(H2O)(CH3CH 2OH)(d-tartH3)(Si2W19O 66)]}·2.5H2O (d-1), were successfully synthesized. Structural analysis indicates that chiral tartrate ligands directly connect with novel lacunary [Si2W19O66]10- polytungstate units. Strong induced optical activity in the polyoxometalate (POM) units is manifested by circular dichroism spectroscopy. Z-scan analysis revealed that l-1 and d-1 are the first chiral POM-based complexes that exhibit two-photon absorption properties typical of the third-order nonlinear optical response.
Original language | English |
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Pages (from-to) | 3269-3271 |
Number of pages | 3 |
Journal | Inorganic Chemistry |
Volume | 53 |
Issue number | 7 |
DOIs | |
State | Published - 7 Apr 2014 |