Growth of strontium oxalate crystals in agar–agar gel

Abstract

Single crystals of strontium oxalate have been grown by using strontium chloride and oxalic acid in agar-agar gel media at ambient temperature. Different methods for growing crystals were adopted. The optimum conditions were employed in each method by varying concentration of gel and reactants, and gel setting time etc. Transparent prismatic bi-pyramidal platy-shaped and spherulite crystals were obtained in various methods. The grown crystals were characterized with the help of FT-IR studies and monoclinic system of crystals were supported with lattice parameters a = 9·67628 Å, b = 6·7175 Å, c = 8·6812 Å, β = 113·566 • , and V = 521·84 Å 3 calculated from X-ray diffractogram.

Crystallization in Gels

“…Sr-oxalate X [187,188] Cd-oxalate X Diamagnetic [189][190][191] CdMgHPO 4 X [192] Ndhepthamolybdate X [193] Lahepthamolybdate X X [194] Cu-succinate X [195] Cu-tartrate Diamagnetic [195] …”

Crystal growth, a research-driven laboratory course

“…Similarly, crystals of strontium oxalate, an isomorphic compound of weddelite, grew in an agar gel containing strontium chloride and covered with a solution of oxalic acid, both at 2 M (Fig. 3c) (Dalal & Saraf, 2011). Oxalate crystals formed at similar growth rates for all pH values tested, with regular bipyramidal and irregular crystalline shapes, regardless of acidic or basic conditions (Fig.…”

Synthesis and Characterization of Struvite-k Crystals by Agar Gel

“…According to Bhavsar [34], neutral gel reduce the rate of reaction and control the nucleation, while Patil et al [35] reported that, the neutral gel increase the size of crystals. However Dalal et al [36] found that the neutral gel reduced the number of nucleation, but could not change the size of crystals. In the present study while using the neutral gel, it was observed that, the large numbers of nuclei were found to be grown near the gel-gel diffusion interface.…”