A New Molecular Crystal: Urea Tartrate

Abstract

Urea tartrate, CO(NH2)2(+)C4HbOb (hereafter abbraviated as UT) is reported for the first time. Large Single Crystals have been grown by the cooling method from aqueous solution. Some of its physical properties have been measured. The second harmonic generation of powder specimens is about three times larger than that of KH2P04.

Characterization of a newly synthesized organic nonlinear optical crystal: Urea ninhydrin monohydrate

“…Urea, a promising organic crystal, exhibits large nonlinear optical coefficients, high degree of birefringence, and relatively high laser damage threshold [6][7][8][9]. Derivatives of urea offered a wide choice of novel materials and are expected to play an important role in the development of NLO devices [10][11][12][13][14][15].…”