APb2(C7H3NO4)2I (A = K, Rb, Cs): rare stable nonlinear optical crystals with second-harmonic generation response and highly distorted lead core coordination polyhedra. Issue 22 (23rd September 2022)

• Record Type: Journal Article
• Authors: Geng, Zi-Long; Zhou, Zi-Qi; Tang, Hong-Xin; Bao, Wen-Xiu; Fu, Rui-Biao; Wu, Xin-Tao
• Is Part Of: Inorganic chemistry frontiers. Volume 9:Issue 22(2022)
• Page Start: 5783
• Page End: 5787
• Publication Date: 2022-09-23
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2qi01638a
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : APb2 (C7 H3 NO4 )2 I (A = K, Rb, Cs) features a 3D NCS cubic framework consisting of highly distorted [PbNO5 ] and [PbNO4 I] coordination polyhedra, a moderate SHG response, a wide transparent window and a high thermal stability above 300 °C. Abstract : The development of nonlinear optical (NLO) crystals with excellent performance has been the goal of numerous researchers. Herein, iodide has been successfully introduced into lead 2, 6-pyridinedicarboxylates to rationally synthesize a series of new stable NLO crystals, APb2 (C7 H3 NO4 )2 I (A = K, Rb, Cs), via a mild mix-solvothermal method. It is interesting to note that APb2 (C7 H3 NO4 )2 I (A = K, Rb, Cs) has a 3D noncentrosymmetric cubic framework composed of highly distorted [PbNO5 ] and [PbNO4 I] coordination polyhedra. Remarkably, KPb2 (C7 H3 NO4 )2 I exhibits a strong second-harmonic generation (SHG) response about 3.4 times that of KDP and a high thermal stability above 300 °C under an air atmosphere. This work provides an effective strategy for the further exploration of high-performance NLO crystals.