Abstract
Single crystals of dimethyl [(4-nitrophenyl)sulfonyl]amidophosphate (HL1) and its coordination compounds with Yb3+ and La3+ have been obtained. Their physicochemical properties using X-ray diffraction analysis, absorption (300 K and 5 K), emission (300 K and 77 K) and FTIR spectroscopy, thermogravimetry, differential scanning calorimetry, magnetization measurements have been determined and compared with those of Na[Ln(L2)4], where HL2 = dimethyl (4-methylphenylsulfonyl)amidophosphate Ln = La3+, Yb3+, Gd3+. The effect of substitution of a methyl group at the para position by a nitro group on structural (Yb–O distances, coordination polyhedra, non-covalent interactions, packing), spectroscopic (2F7/2 and 2F5/2 crystal field splitting, radiative lifetime (τrad), emission decay time (τ), intrinsic quantum yield (QYbYb), antenna effect) and magnetic properties in DC and AC fields were analyzed.
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