Organotin Selenide Clusters and Hybrid Capsules

Several compounds with unique structural motifs that have already been known from organotin sulfide chemistry, but remained unprecedented in organotin selenide chemistry so far, have been synthesized. The reaction of [((RSn)-Sn-1)(4)Se-6] (R-1 = CMe2CH2C(O) Me) with N2H4 center dot H2O/(SiMe3)(2)Se and PhN2H3/(SiMe3)(2)Se led to the formation of [{((RSn)-Sn-2)(2)SnSe4}(2)(mu-Se)(2)] (1; R-2 = CMe2CH2C(Me)NNH2) and [{((RSn)-Sn-3)(2)SnSe4}(2)(mu-Se)(2)] (2; R-3 = CMe2CH2C(Me) NNPhH)). The addition of ortho-phthalaldehyde to [((RSn)-Sn-2)(4)Se-6] yielded a cluster with intramolecular bridging of the organic groups, namely, [((RSn2)-Sn-4)(2)Se-6] (3; R-4 =(CMe2CH2C(Me) NNCH)(2)C6H4). The introduction of organic ligands with longer chains finally allowed the isolation of inorganic-organic capsules of the type [(mu-R)(3)(Sn3Se4)(2)]X-2, with R=(CMe2CH2C(Me)NNHC(O))(2)(CH2)(4) and X=[SnC3], Cl (4a, b) or R=CMe2CH2C(Me)NNH)(2) and X=[SnCl3] (5). The capsules enclose solvent molecules and/or anions as guests. All compounds were characterized by means of single-crystal X-ray diffraction studies, NMR spectroscopy, and mass spectrometry.