Synthesis and crystal structures of new triangle tungsten telluride compounds containing a [W3(μ3-Te)(μ2-Te2)3]4+ cluster core: {W3Te7[(RO)2PS2]3}I (R=Et, Pri)

Two complexes, W3Te7[(EtO)2PS2]3I (1) and W3Te7[(PriO)2PS2]3I (2), were prepared via solid state reaction of (RO)2PS2K with a product of high temperature reaction of elemental W, Te and I2. The structures of the two compounds have been determined by X-ray crystallography. Crystal data are 1: monoclinic, P21/c, Z=4, a=14.3862(3), b=16.2114(1), c=18.9766(2) Å, β=111.655(1)°, V=4113.37(10) Å3, Z=4, Dc=3.435 Mg/m3; 2: monoclinic, P21/n, Z=4, a=14.6197(3), b=23.9630(1), c=15.1249(3) Å, β=113.688(1)°, V=4852.28(14) Å3, Z=4, Dc=3.027 Mg/m3. The results of both the complexes present the first examples of a cluster containing a [W3(μ3-Te)(μ2-Te2)3]4+ core.