@article{martin_hess_boyle_2004, title={Synthesis of [NH4]MnCl2(OAc) and [NH4](2)MnCl4(H2O)(2) by solvothermal dehydration and structure/property correlations in a one-dimensional antiferromagnet}, volume={43}, ISSN={["0020-1669"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-2442565694&partnerID=MN8TOARS}, DOI={10.1021/ic049881r}, abstractNote={The utility of the solvothermal dehydration strategy whereby superheated acetonitrile reacts with water of hydration to form ammonium acetate is demonstrated in the synthesis of [NH(4)]MnCl(2)(OAc), I, and [NH(4)](2)MnCl(4)(H(2)O)(2), II, from MnCl(2).4H(2)O. The structure of I is shown to crystallize in the monoclinic space group C2/c (No. 15) with a = 15.191(6) A, b = 7.044(2) A, c = 13.603(6) A, beta = 107.31 degrees, V = 1389.7(9) cm(-)(1), and Z = 8. The structure of II crystallizes in the space group I4/mmm (No. 139) with a = 7.5250(5) A, b = 8.276(2) A, V = 468.6(1) cm(-)(1), and Z = 2. Both structures exhibit extensive hydrogen bonding that controls both local Mn-Cl bonding and the interchain organization. I is shown to be a one-dimensional Heisenberg antiferromagnet with an intrachain exchange constant J/k = -2.39 K. This structure exhibits exchange coupling intermediate between the well-studied triply and doubly chloride-bridged one-dimensional manganese Heisenberg antiferromagnets. The structure/property correlation demonstrates a linear dependence of the exchange constant on the Mn-Cl-Mn bond angle, alpha, for alpha < 94 degrees.}, number={10}, journal={INORGANIC CHEMISTRY}, author={Martin, JD and Hess, RF and Boyle, PD}, year={2004}, month={May}, pages={3242–3247} }