Novel dibenzo-18 crown -6 (DB18C6) complexes: [K(DI18C6)]2[Pd(SCN)4] (1), (K(DB18C6)]2[Pt(SCN)4](2) have been synthesized and characterized by IR, X-ray diffraction analysis. The complexes are all triclinic, space group P-1. The crystal data of 1: a=0873 75(17)nm, b=1.199 0(2) nm, C=1.318 0(3)nm, α=73.56(3)°,β=99.90(3)°,γ=82.34(3)°, V=1. 298 6(4) nm^3, Z=1, F(000)=584, R1=0.075 2 ωR2= 0.166 0. The crystal data of 2:a=0.855 3(5) nm, b=1.312 7(3) nm, c=1.181 9(3) nm, α=106. 21(2)°,β=82.77(3)°,γ=99.72(3)° V=1.251 6(8) nm^3, Z=1, F(000)=818, R1=0.025 4, ωR2=0.068 2. In the solid state, they display a quasi- one- dimensional infinite chain of two [K(DB18C6)^+ complex cations and a [M(SCN)4]^2+ complex anion bridged by K^+ -π interactions between adjacent [K(DB18C6)^+units.

Key words: CROWN ETHER, CROWN ETHER COMPOUNDS, DIBENZO COMPOUNDS, PALLADIUM COMPLEX, PLATINUM COMPLEX, CRYSTAL STRUCTURE, STRUCTURE CHARACTERISTICS, UNIT CELL