Characteristic features of the synthesis, solubility products, and absorption spectra of basic cobalt(II) acetate, nitrate, and chloride salts

A solid solution series of atacamite type Ni2Mg2−2Cl(OH)3

“…Therefore "α-Mg 2 Cl (OH) 3 " was denoted as MgCl x (OH) 2 À x , especially with higher OH content as "solid solution-type OH" (ss type OH). The stable "β" polymorphs were synthesized by many authors and each one was estimated to have the fixed composition M 2 Cl(OH) 3 for M ¼Mn [4]; Fe [4]; Co [5][6][7][8]; Ni [1,9]; Mg [10][11][12]. Cu 2 Cl(OH) 3 shows an even higher polymorphism as there are at least four polymorphs know: botallacite [13], atacamite [14], paraatacamite [15] and clinoatacamite [16,17].…”