ABSTRACT
The title compound, (C8H12NO)2[Co(H2P2O7)2(H2O)2]·2H2O, crystallizes isotypically with its Mn(II) analogue. It consists of alternating layers of organic cations and inorganic complex anions, extending parallel to (100). The complex cobaltate(II) anion exhibits -1 symmetry. Its Co(2+) atom has an octa-hedral coordination sphere, defined by two water mol-ecules in apical positions and two H2P2O7 (2-) ligands in equatorial positions. The cohesion between inorganic and organic layers is accomplished by a set of O-Hâ¯O and N-Hâ¯O hydrogen bonds involving the organic cation, the inorganic anion and the remaining lattice water mol-ecules.
ABSTRACT
The asymmetric unit of the title salt, 2C6H5CH2NH3 (+)·H2P2O7 (2-), contains two independent benzyl-ammonium cations and a di-hydrogen diphosphate dianion. In the crystal, O-Hâ¯O and N-Hâ¯O hydrogen bonds link the cations and anions, forming a two-dimensional network parallel to (010). Within this network, weak C-Hâ¯O hydrogen bonds are observed.
ABSTRACT
In the title complex, (C8H14N2)[Co(H2P2O7)2(H2O)2]·2H2O, the Co(II) ion lies on an inversion center and is coordinated by two bidentate diphosphate ligands and two water mol-ecules in a slightly distorted octa-hedral coordination geometry. The m-xylylenediaminium cation is located on a twofold rotation axis. In the crystal, a three-dimensional supra-molecular assembly is constructed by O-Hâ¯O and N-Hâ¯O hydrogen bonds between the organic cations, complex anions and uncoordin-ated water mol-ecules.
ABSTRACT
In the title compound, 2C(8)H(12)NO(+)·H(2)P(2)O(7) (2-), the linked PO(4) groups of the diphosphate anion are almost eclipsed and the P-O-P angle is 134.45â (7)°. In the crystal, infinite ribbons of H(2)P(2)O(7) (2-) anions propagate in [100], being linked by strong O-Hâ¯O hydrogen bonds. The 4-meth-oxy-benzyl-ammonium cations bond to the diphosphate chains by N-Hâ¯O and C-Hâ¯O links, and are themselves linked by C-Hâ¯π inter-actions.
ABSTRACT
The asymmetric unit of the title compound, (C8H12NO)2[Mn(H2P2O7)2(H2O)2]·2H2O, consists of half an Mn(II) complex anion, a 2-meth-oxy-benyl-ammonium cation and a solvent water mol-ecule. The Mn(II) complex anion lies across an inversion center, and has a slightly distorted octa-hedral coordination environment for the Mn(II) ion, formed by two bidentate dihydrogendiphosphate ligands and two water mol-ecules. In the crystal, the components are linked by O-Hâ¯O and N-Hâ¯O hydrogen bonds, forming layers parallel to (100). An intra-molecular N-Hâ¯O hydrogen bond is also observed.
ABSTRACT
In the crystal structure of the title compound, C(4)H(6)N(3) (+)·HSO(4) (-), hydrogen sulfate anions self-assemble through O-Hâ¯O hydrogen bonds, forming chains along the b axis, while the cations form centrosymmetric pairs via N-Hâ¯N hydrogen bonds. The 2-amino-pyrimidinium pairs are linked to the sulfate anions via N-Hâ¯O hydrogen bonds, forming a two-dimensional network parallel to (10[Formula: see text]). In addition, weak inter-molecular C-Hâ¯O contacts generate a three-dimensional network.
