The asymmetric unit of the title compound, [H(3)N(CH(2))(5)NH(3)](2)I[I(3)](3) or 2C(5)H(16)N(2) (2+)·3I(3) (-)·I(-), consists of two crystallographically independent pentane-1,5-diaminium dications and two triiodide anions in general positions besides two additional triiodide and two iodide anions located on twofold axes. The compound crystallizes in the centrosymmetric monoclinic space group ...

Dedicated to Professor Hubert Schmidbaur, the grand master of gold chemistry, on the occasion of his 75th birthday The chemistry of gold(I) with the ligand binap = 2,2′-bis(diphenylphosphino)-1,1′ -binaphthyl is reported. Reaction of [Au2Cl2(μ-binap)] with silver trifluoroacetate gave the corresponding complex [Au2(O2CCF3)2(μ-binap)], and crystallization in the presence of excess silver trifluo...

The asymmetric unit of the title salt, C(3)H(12)N(2) (2+)·2C(8)H(7)O(3) (-), contains two 4-meth-oxy-benzoate anions and one propane-1,2-diaminium cation. All the amino H atoms of the cation are involved in N-H⋯O hydrogen bonds with the carboxyl-ate O atoms of the anions.

In the title compound, C(2)H(10)N(2) (2+)·2C(9)H(3)Br(4)O(4) (-)·CH(4)O, the N atoms of the ethane-1,2-diamine mol-ecule are protonated. The crystal structure is stabilized by N-H⋯O hydrogen bonds between the ethane-1,2-diaminium cations and 3,4,5,6-tetra-bromo-2-(methoxy-carbon-yl)bromo-benzoate anions, and by O-H⋯O and N-H⋯O hydrogen bonds between the methanol solvate and both the cation and ...

In the title salt, C(2)H(10)N(2) (2+)·C(14)H(8)O(6)S(2-), both the ethyl-ene-diaminium cations and the 4,4'-sulfonyl-dibenzoate dianions have crystallographic twofold rotational symmetry. They are inter-linked by aminium N-H⋯O(carboxyl-ate) hydrogen-bonding associations, giving sheets parallel to (101) and are further linked along [010], forming a three-dimensional structure.

The asymmetric unit of the title salt, C(6)H(9)ClN(2) (2+)·2H(2)PO(4) (-), contains two dihydrogenphosphate anions and one 2-chloro-benzene-1,4-diaminium dication. The H(2)PO(4) (-) anions are inter-connected through strong O-H⋯O hydrogen bonds to form two-dimensional infinite layers parallel to (001). The organic entities are anchored to the inorganic layers through N-H⋯O hydrogen bonds, and t...