The preparation and characterization of a new organometallic nonlinear optical material — Tri-allylthiourea mercury bromide (ATMB) crystal

Synthesis, growth and characterization of an organometallic complex tri-allylthiourea cadmium bromide single crystals

“…There is a red-shift of UV absorption edge for ATCB in comparison with ATCC or ATMC [18], this is due to less electronegativity of the bromine (Br) atom and the more distorted MXS 3 tetrahedra. But the UV cut-off is at a lower wavelength in comparison with allylthiourea complexes formed with other metal bromides [14,15]. Absorption peaks appearing at 1485, 1530, 1628 and 1704 nm in the nearinfrared region were assigned to overtones of (CH) vibrations of the allyl groups.…”

“…Recently, synthesis and growth of new members of ATMX series of organometallic co-ordination complexes; tri-allylthiourea zinc chloride (ATZC) [13] and tri-allylthiourea zinc bromide (ATZB) [14] were reported. Allylthiourea complexes have relatively large NLO co-efficient and excellent UV cut-off wavelengths [15]. Their chemical stabilities and mechanical properties are superior to those of pure organic molecular crystals.…”

Study of growth condition and characterization of bisthiourea–zinc acetate (BTZA) crystal grown in silica gel

“…Employing noncentrosymmetric (NCS) chromophores as building units offers an excellent strategy for synthesizing new NLO materials [5]. Semiorganic materials with NLO properties are of more importance as they share the advantages of both inorganic [high thermal and mechanical stability] and organic [broad optical frequency range and second harmonic generation] materials [6,7]. Recently metal complexes of thiourea and its analogs have been investigated [8].…”

Synthesis, structural, topographical, linear and nonlinear optical, electrical and mechanical properties of Bisthiourea zinc acetate single crystal

“…Non Linear Optical (NLO) materials are attracting a great deal of attention due to their applications in optical devices, such as optical switches, optical modulators, optical communications, optical data storage and etc [1,2]. In the past few decades, organic and semiorganic materials are the most widely used crystals for frequency conversion.…”