-
[show abstract]
[hide abstract]
ABSTRACT: The two isomorphous title compounds, [1,5,9-tris(2-aminoethoxy)-3,7,11-trihydroxy-3,7,11-tribora-1,5,9-triborata-2,4,6,8,10,12-hexaoxa-13-oxoniatricyclo[7.3.1.0(5,13)]tridecane]cobalt(II), [Co(C(6)H(21)B(6)N(3)O(13))] or Co{B(6)O(7)(OH)(3)[O(CH(2))(2)NH(2)](3)}, and the Ni(II) analogue, [Ni(C(6)H(21)B(6)N(3)O(13))], each consist of an M(II) cation and an inorganic-organic hybrid {B(6)O(7)(OH)(3)[O(CH(2))(2)NH(2)](3)}(2-) anion. The M(II) cation lies on a crystallographic threefold axis (as does one O atom) and is octahedrally coordinated by three N atoms from the organic component. Three O atoms covalently link the B-O cluster and the organic component. Molecules are connected to one another through N-H···O and O-H···O hydrogen bonds, forming a three-dimensional supramolecular network.
Acta crystallographica. Section C, Crystal structure communications 11/2011; 67(Pt 11):m338-41. · 0.78 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The title compound, {[La(4)(CH(3)CO(2))(10)(C(2)O(4))(H(2)O)(2)]·2H(2)O}(n), exhibits a two-dimensional layered structure with the oxalate and acetate ligands acting as bridges. The asymmetric unit contains two crystallographically independent lanthanum(III) ions, half of an oxalate ligand, five acetate ligands, one coordinated water mol-ecule and one uncoordinated water mol-ecule. The coordination numbers of the two La ions are 9 and 10. Adjacent layers of the structure, which extend parallel to (100), are linked by O-H⋯O hydrogen bonds and are also held together by van der Waals inter-actions between the CH(3) groups of the acetate anions.
Acta Crystallographica Section E Structure Reports Online 10/2011; 67(Pt 10):m1436-7. · 0.35 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: In the crystal structure of the title compound, C(7)H(6)N(3)O(2) (+)·H(2)PO(4) (-)·C(7)H(5)N(3)O(2)·2H(2)O, the components are connected through O-H⋯O, N-H⋯O and O-H⋯N hydrogen-bonding inter-actions, forming a sheet-like structure parallel to (101). Adjacent sheets are further linked together by strong O-H⋯O hydrogen-bonds involving the dihydrogenphosphate groups. π-π stacking inter-actions between neighbouring aromatic constituents [centroid-centroid distance 3.653 (3) Å] help to consolidate the crystal packing.
Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 7):o1757-8. · 0.35 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The structure of the title compound, catena-poly[[[di-μ-aqua-μ-fumarato-μ-(boric acid)-disodium]-di-μ-aqua] boric acid monosolvate], contains two crystallographically independent Na(+) cations, each being six-coordinated by one fumarate O atom, one boric acid O atom and four water O atoms in a distorted octa-hedral geometry. Adjacent [NaO(2)(OH(2))(4)] units share edges and are linked into chains propagating parallel to [100]. The free boric acid mol-ecules are connected to the chains through strong inter-molecular O-H⋯O hydrogen bonds. Additional O-H⋯O hydrogen bonds between the water mol-ecules, the free and coordinated boric acid mol-ecules and the fumarate anion lead to the formation of a three-dimensional supra-molecular structure. With the exception of the two water mol-ecules, all other atoms lie on mirror planes.
Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 11):m1460-1. · 0.35 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The title compound, [Zn(C2H3O2)(C6H18N4)][B5O6(OH)4], contains mixed-ligand [Zn(CH3COO)(teta)]+ complex cations (teta is triethylenetetramine) and pentaborate [B5O6(OH)4]- anions. The [B5O6(OH)4]- anions are connected to one another through hydrogen bonds, forming a three-dimensional supramolecular network, in which the [Zn(CH3COO)(teta)]+ cations are located.
Acta crystallographica. Section C, Crystal structure communications 09/2009; 65(Pt 8):m308-10. · 0.78 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The title compound 2C(8)H(14)N(2) (2+)·[B(14)O(20)(OH)(6)](4-), contains diprotonated C(8)H(14)N(2) (2+) cations and centrosymmetric tetra-deca-borate anions. The crystal structure is stabilized by O-H⋯O and N-H⋯O hydrogen bonds.
Acta Crystallographica Section E Structure Reports Online 01/2008; 64(Pt 11):o2129. · 0.35 Impact Factor
