CHAIN, SHEET AND FRAMEWORK STRUCTURES IN THE ADDUCTS OF PHENYLPHOSPHONIC ACID WITH 4,4'-BIPYRIDYL (1 1), PIPERAZINE (2/1) AND 1,4-DIAZABICYCLO[2.2.2]OCTANE (2/1)/

Phenylphosphonic acid-4,4'-bipyridyl (1/1), (1), C6H7O3P C10H8N2, tric linic, P (1) over bar, a = 6.9026(8), b= 9.7086(9), c = 12.201(2)Angst rom, alpha = 77.138(9), beta= 74.345(10), gamma = 75.477(8)degrees wit h Z = 2, is a salt, C10H9N2+[C6H5PO2(OH)](-), containing singly proton ated 4,4'-bipyridyl cations: the cations and anions are linked by N-H ... O and C-H ... O hydrogen bonds in an R-2(2)(7) motif and these agg regates are linked into centrosymmetric R-2(2)(8) dimers by O-H ... O hydrogen bonds; the dimer units are linked into chains by CH ... O hyd rogen bonds. Phenylphosphonic acid-piperazine (2/1), (C6H7O3P)(2) . C4 H10N2 (2), monoclinic, P2(1)/n, a = 6.0042(9), b = 19.746(3), c = 8.65 1 (2) Angstrom, beta = 105.63(2)degrees with Z = 2, is a salt, C4H12N2 2+ - [{C6H5PO2(OH)}(-)](2), containing doubly protonated piperazine: t he anions are linked by O-H ... O hydrogen bonds into centrosymmetric R-2(2)(8) dimers and these dimers are linked to the centrosymmetric ca tions by N-H ... O hydrogen bonds: each cation is hydrogen-bonded to f our different anion dimers and each anion dimer is hydrogen-bonded to four different cations; the overall structure consists of two-dimensio nal sheets built from R-6(4)(16) and R-4(4)(18) rings. Phenylphosphoni c acid-1,4-diazabicyclo [2.2.2] octane (2/1), (3), (C6H7O3P)(2) . C6H1 2N2, monoclinic, P2(1)/n, a= 6.3607(3), b = 21.8300(11), c = 14.5965(9 )Angstrom, beta = 92.558 (6)degrees, with Z = 4, is a salt in which on e nitrogen of the diamine is fully protonated and the other is partial ly protonated: the anionic components are linked into C(4) chains by O -H ... O hydrogen bonds, and these chains are cross-linked via the dia mines by means of N-H ... O and O-H ... N hydrogen bonds. The resultin g sheets built from R-8(8)(34) rings are linked by C-H ... O hydrogen bonds into a three-dimensional framework.