Exploration of Composition Space in Templated Uranium Sulfates

Abstract

The phase stability of organically templated uranium sulfates in the [UO(2)(CH(3)CO(2))(2).2H(2)O/homopiperazine/H(2)SO(4)] and [UO(2)(CH(3)CO(2))(2).2H(2)O/N,N-dimethylethylenediamine/H(2)SO(4)] systems has been studied using composition space. Two new compounds were formed in each system; [N(2)C(5)H(14)](2)[UO(2)(SO(4))(3)] (USO-17) and [N(2)C(5)H(14)][UO(2)(H(2)O)(SO(4))(2)] (USO-18) contain homopiperazine, and [N(2)C(4)H(14)][UO(2)(SO(4))(2)] (USO-19) and [N(2)C(4)H(14)][(UO(2))(2)(H(2)O)(SO(4))(3)].H(2)O (USO-20) contain N,N-dimethylethylenediamine. The relative stability of the products from each system is dependent upon the reactant mole fractions in the initial reaction gel. Crystal data: USO-17, a = 14.4975(3) A, b = 11.9109(3) A, c = 13.0157(3) A, beta = 110.475(1) degrees, monoclinic, C2/c (No. 15), Z = 4; for USO-18, a = 7.6955(2) A, b = 11.7717(3) A, c = 14.7038(4) A, orthorhombic, P22(1)2(1) (No. 18), Z = 4; for USO-19, a = 9.3322(1) A, b = 9.7743(2) A, c = 13.8897(3) A, orthorhombic, P2(1)2(1)2(1) (No. 19), Z = 4; and for USO-20, a = 11.2460(2) A, b = 10.5387(2) A, c = 17.0432(3) A, beta = 92.9884(6) degrees, monoclinic, P2(1)/c (No. 14), Z = 4.

Synthesis, characterization and magnetic properties of four new organically templated metal sulfates [C5H14N2][MII(H2O)6](SO4)2, (MII = Mn, Fe, Co, Ni)

“…2 have been prepared by slow evaporation. The structures consist of isolated M II ions (M = Mn, Fe, Co, Ni) octahedrally coordinated by six water molecules, diprotonated 2-methylpiperazinediium cations and sulfate anions linked by hydrogen bonds.…”

“…The use of transition metals in soft syntheses of sulfate-based compounds has provided supramolecular structures, related to that of the well-known Tutton's salts. 2 ,havebeen prepared. The use of the racemic mixture of the chiral amine in the reaction provides for alternatives in crystallization: a centrosymmetric structure where the enantiomers are related by an appropriate crystallographic symmetry operation, or one where the enantiomers occupy the same crystallographic position, generating disorder.…”

N,N-Dimethylethane-1,2-diaminium bis(3-hydroxybenzoate)

“…For bond lengths in fully protonated polyamines, see: Bujak & Angel (2006); Bujak & Zaleski (2002); Doran et al (2003); Thorn et al (2005); Zhang et al (2007). Symmetry codes: (i) x þ 1 2 ; Ày þ 3 2 ; z À 1 2 ; (ii) x À 1 2 ; y þ 1 2 ; z; (iii) x À 1 2 ; Ày þ 3 2 ; z À 1 2 ; (iv) x; y; z À 1; (v) x À 1; y; z.…”

A Slow Leak Synthetic Route to Organically Templated Gallium Sulfates

“…The range of metals incorporated include alkaline earths, 2 both early 3-6 and late [7][8][9][10][11][12][13] transition metals, lanthanides, [14][15][16][17][18] and actinides. 8,[19][20][21] The dimensionalities of the metal sulfates in these compounds range from 0D molecular anions 10,11,20 and hexaaqua complexes [22][23][24] to 3D framework 3,7,15,19,25,26 materials.…”