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Antimony(i) -> Pd(ii) complexes with the (mu-Sb)Pd-2 coordination framework
Authors: Kořenková Monika | Hejda Martin | Jirásko Robert | Block Theresa | Uhlik Filip | Jambor Roman | Růžička Aleš | Poettgen Rainer | Dostál Libor
Year: 2019
Type of publication: článek v odborném periodiku
Name of source: Dalton Transactions
Publisher name: Royal Society of Chemistry
Place: Cambridge
Page from-to: 11912-11920
Titles:
Language Name Abstract Keywords
cze Antimonite komplexy Pd(II) s koordinací (mu-Sb)Pd-2 Byly připraveny komplexy Pd(II) koordinované fragmentem ArSb(I) (Ar = C6H3-2,6-(CHNtBu)2. Tímto byly připraveny komplexy [Pd(eta(3)-allyl)(mu-X)](2) (allyl = C3H5, C3H4Me; X = Cl a CF3CO2). Komplexy byly charakterizované také pomocí Sb-121 Mossbauerovi spektroskopie. Antimonite; komplexy; PdII; koordinací; mu-SbPd-2
eng Antimony(i) -> Pd(ii) complexes with the (mu-Sb)Pd-2 coordination framework The reaction of the antimony(i) compound ArSb (1) (where Ar = C6H3-2,6-(CHNtBu)(2)) with various dimeric allyl palladium(ii) complexes [Pd(eta(3)-allyl)(mu-X)](2) (where allyl = C3H5 or C3H4Me; X = Cl or CF3CO2) in a 1 : 1 stoichiometric ratio gave unique complexes with the mu-ArSb moiety bridging two palladium fragments, i.e. [{Pd(eta(3)-C3H5)Cl}(2)(mu-ArSb)] (2), [{Pd(eta(3)-C3H4Me)Cl}(2)(mu-ArSb)] (3) and [{Pd(eta(3)-C3H5)(CF3CO2)}(2)(mu-ArSb)] (4). Compound 1 serves formally as a 4e donor in 2-4. The treatment of 2 with another equivalent of ArSb led to the formation of the [Pd(eta(3)-C3H5)(Cl)(mu-ArSb)] complex (5), proving that 1 is able to function as a 2e donor in target complexes as well. The structures of 2-5 were described in detail both in solution (NMR and mass spectrometry) and in the solid state (single crystal X-ray diffraction analysis). DFT methods were used to compare bonding in the 1 : 1 (5) and 1 : 2 (2) complexes. Furthermore, a comprehensive Sb-121 Mossbauer spectroscopic investigation of complexes 2 and 5 along with parent ArSbCl2 (6) and 1 was performed. For comparison, complexes [Fe(CO)(4)(ArSb)] (7) and [Mo(CO)(5)(ArSb)] (8) were also included in this study. dinuclear rhodium complexes; n,c,n-chelated antimony(iii); chemistry; valence; bi; sb; reactivity; reduction; elements; ligands

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