Synthesis, Structure, and Non-Linear Optical Properties of New Metal Semi-Organic Complex: 1,4-diazabicyclo[2.2.2]octane-1,4-diium tris(nitrato)-silver

Abstract

Optically transparent metal semi organic single crystal of 1,4-diazabicyclo[2.2.2]octane-1,4-diium tris(nitrato)-silver (DTNS) is synthesized using slow evaporation solution technique. This single crystal is grown with dimension up to $3\times 0.6\times 0.2{\mathrm{cm}}^3$ using 1,4-diazabicyclo[2.2.2]octane (DABCO) as solute and water and methanol as solvent in the presence metal salt silver nitrate. Single crystal X-ray diffraction (XRD) study showed a trigonal structure with space group P3c1 and the sum formula $C_6{H}_{14}Ag{N}_5{O}_9$. The composition of metal Silver (Ag) in single crystal is confirmed through Energy Dispersive X-Ray Analysis. The confirmation of various functional groups in DTNS molecular structure is characterized by Fourier Transform Infrared Spectroscopy (FT-IR). UV–Visible absorption study showed the cut-off wavelength at 250 nm with transparency 350–700 nm and the bandgap is about 3.3 eV. The thermal stability and melting point temperature is analyzed by Thermogravimetry-Differential Scanning Calorimetry (TG/DSC). The third order Non Linear Optics (NLO) efficiency of the synthesized crystal is $2\times {10}^6$ times greater than that of KDP. All of these analysis implies that DTNS crystal can be beneficial element for non-linear optical applications.