C. Werner et al., SYNTHESIS AND STRUCTURE OF BA(HSO4)(2)(H2 SO4)(3) AND SR(HSO4)2(H2SO4), Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 51(7), 1996, pp. 952-958
From the binary systems M(2)SO(4)/H2SO4 (M = Ba, Sr), two new hydrogen
sulfates, (Ba(HSO4)(2)(H2SO4)(3) and Sr(HSO4)(2)(H2SO4), have been sy
nthesized and structurally characterized. Ba(HSO4)(2)(H2SO4)(3) crysta
llizes in the orthorhombic space group P2(1)2(1)2(1) with unit cell pa
rameters a=4.680(1), b=11.267(2), c=29.188(6)Angstrom, Z=4. BaO9 trigo
nal prismatic polyhedra with Ba-O distances of 2.68-3.02 Angstrom from
nine different SO4 tetrahedra are connected via common bases and buil
d ''isolated'' columns consisting of O-S-O bridged double chains along
the x-axis. HSO4 and H2SO4 tetrahedra are linked via hydrogen bonds t
o form columns. Sr(HSO4)(2)(H2SOr) crystallizes in the triclinic space
group P (1) over bar with unit cell parameters a=5.971(1), b=8.468(2)
, c=10.226(2)Angstrom, alpha=8.171(3), beta=83.30(3), gamma=70.69(3)de
grees, Z=2. Sr is coordinated by nine oxygen atoms from seven differen
t SO4 tetrahedra with Sr-O distances of 2.47-2.84 Angstrom. The SrO9 p
olyhedra build layers consisting of O-S-O bridged chains. Three crysta
llographically different SO4 tetrahedra are linked via hydrogen bonds
to form a kind of flattened cylinder along the x-axis.