Synthesis and Characterization of New Quasi-One-Dimensional Mn(II) Hydroxynitrates (Mn xZn 1- x)(OH)(NO 3)H 2O ( x = 0.53, 1.00)

Abstract

The reaction between an aqueous solution of Mn(NO 3) 2and MnO or ZnO gives a white-beige powder of (Mn x Zn 1- x ) (OH)(NO 3(H 2O) with x = 1.0 or x = 0.53, respectively. These new manganese(II)-based hydroxynitrates are isostructural with Zn(OH)(NO 3)(H 2O) and crystallize in the monoclinic system, space group P2 1/ c, with a = 18.070(2) Å, b = 3.3226(5) Å, c = 14.362(2) Å, and β = 114.960(6)° for (Mn 0.53Zn 0.47)(OH)(NO 3)(H 2O) and a = 18.154(2) Å, b = 3.3721(4) Å, c = 14.456(1) Å, and β = 114.934(6)° for Mn(OH)(NO 3)(H 2O). The manganese(II) atoms are octahedrally coordinated within zigzag double chains running along the b direction. Magnetic measurements from room temperature down to 4.2 K show a quasi-one-dimensional behavior of this special array of classical S = 5/2 spins.