The new inclusion complexes [(C2H5)(4)N+](2)C4O42-. 4(NH2)(2)CS . 2H(2)O (1
), [(C2H5)(4)N+](2)C4O42-. 6(NH2)(2)CS (2) and [(C2H5)(4)N+](2) C4O42-. 2(N
H2)(2)CS . 2H(2)O (3) have been prepared and characterized by X-ray crystal
lography. In the crystal structure of (1), infinitely extended squarate-wat
er chains inter-link adjacent puckered thiourea layers to generate a three
dimensional host lattice with large unidirectional rectangular channels eac
h containing a double column of well-ordered tetraethylammonium cations. In
complex (2), well-ordered tetraethylammonium cations are stacked in single
columns within the channel-type thiourea-squarate host lattice constructed
by the crosslinkage of two types of layers. In complex (3), well-ordered t
eteraethylammonium cations are sandwiched between puckered layers generated
by the cross-linkage between zigzag (C4O42-. 2H(2)O)(infinity) chains and
singly hydrogen-bonded dimeric thiourea ribbons. (C) 2000 Elsevier Science
Ltd. All rights reserved.