Synthesis and Crystal Structure of Hexakis(isothiocyanato)erbium(III) Thiocyanate Bis(18-Crown-6)dipotassium Bis[(18-Crown-6)ethanolpotassium]

A new complex compound, [K-2(18-crown-6)(2)[K(18-crown-6)(EtOH)](2)[Er(NCS)(6)](SCN) (I), was synthesized and its crystal structure was studied by X-ray diffraction. In this work, the synthes and X-ray difraction stady of the crystals of a new complex, hexakis (isothiocyanato) erbiu(III) thiocyanate bis(18-crown-6) dipotassium bis(18-crown-6) ethanolpotassium], [K-2(18-crown-6)(2)][K(18-crown-6)(ETON)](2)[Er(NCS)(6)(SCN)(I)] are described. In crystal I, the alternating [Er(NCS)(6)](3-) anions and binuclear complex cation [K(18-crown-6)(2)](2+) from infinite chains via the F-S bonds, while two complex cations [K(18-crown-6)(ETON)](+) and the statistically disordered SCN- anion between them are linked by the hydragen bonds O-H ... S and O-H ... N. Complex I contains the host-guest complex cations [K-2(18-crown-6)(2))](2+) and [K(18-crown-6)(ETON)](+) [1]. The alternating octabedral [Er(NCS)(6)](3-) anions and binuclear complex cations [K-2(18-crown-6)(2)](2+) of crystal I form infinite chains via the K-S bonds, while two complex cations [K(18-crown-6)(EtOH)](+) and the statistically disordered SCN- anion lying between them are linked by interionic hydrogen bonds O-H ... S and O-H ... N. Complex I contains the host-guest complex cations [K-2(18-crown-6)(2)](2+) and [K(18-crown-6)(EtOH)](+) [1].