Growth and characterization of tris thiourea magnesium zinc sulphate single crystals

Second and third order nonlinear optical, mechanical, surface characteristics of bis(thiourea) manganese chloride (BTMC) grown by slow cooling technique used for frequency conversion applications

“…Generally, organic crystals possess high optical nonlinearity but poor mechanical strength, thermal stability and low laser damage threshold whereas an inorganic possess better mechanical strength and high thermal stability although they show relatively low nonlinearity due to the shortfall of extended π-electron delocalization [2].The problems can be overcome by new type of compound called semiorganic. Literature elucidate that semiorganic material shows the properties of high non-linearity of organics with better mechanical and thermal stability of the inorganic [3][4][5][6][7][8][9][10][11]. Hence, semi-organic materials are made an attention by material researchers.…”

Te(CS(NH2)2)4SO4·2H2O: A Three-in-One Semiorganic Nonlinear Optical Crystal with an Unusual Quadrilateral (TeS4)6– Chromophore

“…28−44 The type of semiorganic material has usually been considered to possess the advantages of both organic and inorganic compounds. 45 Extensive investigation in this direction resulted in the discovery of a series of semiorganic NLO crystals, such as Zn(CS(NH 2 ) 2 ) 3 SO 4 , 44 MgZn(CS(NH 2 ) 2 ) 3 SO 4 , 42 Ba(CS-(NH 2 ) 2 ) 2 (NO 3 ) 2 , 39 and Cd(CS(NH 2 ) 2 ) 2 Cl 2 . 32 Whereas, we have noticed that only a few Te(II)(tu)-containing semiorganic crystals have been reported, which are mainly the complexes of thiourea and metal halides found over 30 years ago.…”

“…Notably, organic groups with similar π-conjugated configurations such as CO­(NH 2 ) 2 (carbamide), CS­(NH 2 ) 2 (thiourea = tu), [C­(NH 2 ) 3 ] + , (C 3 N 3 O 3 ) 3– , 4-hydroxypyridine, and so on are also alternative NLO-active FBUs. − For decades, the CS­(NH 2 ) 2 group with large dipole moment attracted sustained attention as an interesting FBU for linear or NLO materials . Because of its electroneutrality, this group has been widely used in the synthesis of semiorganic materials by combining them with other inorganic compounds. − The type of semiorganic material has usually been considered to possess the advantages of both organic and inorganic compounds . Extensive investigation in this direction resulted in the discovery of a series of semiorganic NLO crystals, such as Zn­(CS­(NH 2 ) 2 ) 3 SO 4 , MgZn­(CS­(NH 2 ) 2 ) 3 SO 4 , Ba­(CS­(NH 2 ) 2 ) 2 (NO 3 ) 2 , and Cd­(CS­(NH 2 ) 2 ) 2 Cl 2 .…”

“…Because of its electroneutrality, this group has been widely used in the synthesis of semiorganic materials by combining them with other inorganic compounds. − The type of semiorganic material has usually been considered to possess the advantages of both organic and inorganic compounds . Extensive investigation in this direction resulted in the discovery of a series of semiorganic NLO crystals, such as Zn­(CS­(NH 2 ) 2 ) 3 SO 4 , MgZn­(CS­(NH 2 ) 2 ) 3 SO 4 , Ba­(CS­(NH 2 ) 2 ) 2 (NO 3 ) 2 , and Cd­(CS­(NH 2 ) 2 ) 2 Cl 2 . Whereas, we have noticed that only a few Te­(II)­(tu)-containing semiorganic crystals have been reported, which are mainly the complexes of thiourea and metal halides found over 30 years ago. , Further, almost all of them crystallized into centrosymmetric space groups or P 4 3 2 1 2 space group with an effective SHG coefficient equal to zero.…”