Preparation and characterization of single crystals of tetrakis(4-(5,5-dimethyl-2-phenyl-1,3-dioxan-2-yl)phenyl)germane

• Published in: Journal of industrial and engineering chemistry (Seoul, Korea) 2019, 69(0), , pp.444-448
• Main Authors: Lee, Tae Won, Lee, Dong Woo, Choi, Yeonjeong, Ok, Kang Min, Park, Kwangyong
• Format: Article
• Language: English
• Subjects: ADP; CCD; Charge-coupled device; Electronic supplementary information; ESI; Gas adsorption; Melting points; NCS; NH4H2PO4; NLO; Noncentrosymmetric; OLED; Organic light-emitting diode; Organogermanium compound; Powder XRD; PXRD; Second-harmonic generating; Second-harmonic generating efficiency; Second-order nonlinear optical; SHG; Single crystal; Tetrahedral; Tetramethylsilane; TGA; Thermogravimetric analysis; TMS; X-ray diffraction; XRD; 화학공학
• ISSN: 1226-086X; 1876-794X
• DOI: 10.1016/j.jiec.2018.09.024

[Display omitted] A novel tetrakis(4-(5,5-dimethyl-2-phenyl-1,3-dioxan-2- yl)phenyl)germane (2) was synthesized by the reaction of germanium(IV) tetrachloride with 4-(5,5-dimethyl-2-phenyl-1,3-dioxan-2-yl)phenyllithium. Colorless plate-shaped single crystals obtained from recrystallization in ether were characterized by the single-crystal X-ray diffraction. The organogermanium compound was crystallized in a noncentrosymmetric nonpolar tetragonal space group, I-4, and classified as a porous molecular material owing to the presence of two types of distinct channels as a result of intermolecular hydrogen bonding. Compound 2 exhibits a differential gas adsorption property. The powder second-harmonic generating (SHG) measurements indicate that compound 2 shows a SHG efficiency 10 times greater than those of α-SiO2 and type-1 nonphase-matchable.