TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Schweighöfer, Philip V.
A1  - Abram, Ulrich
T1  - Reactions of [ReOX3(PPh3)2] Complexes (X = Cl, Br) with Phenylacetylene and the Structures of the Products
JF  - Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry
N2  - Oxorhenium(V) complexes [ReOX3(PPh3)2] (X = Cl, Br) react with phenylacetylene under formation of complexes with ylide-type ligands. Compounds of the compositions [ReOCl3(PPh3){C(Ph)C(H)(PPh3)}] (1), [ReOBr3(OPPh3){C(Ph)C(H)(PPh3)}] (2), and [ReOBr3(OPPh3){C(H)C(Ph)(PPh3)}] (3) were isolated and characterized by X-ray diffraction. They contain a ligand, which was formed by a nucleophilic attack of released PPh3 at coordinated phenylacetylene. The structures of the products show that there is no preferable position for this attack. Cleavage of the Re–C bond in 3 and dimerization of the organic ligand resulted in the formation of the [{(PPh3)(H)CC(Ph)}2]2+ cation, which crystallized as its [(ReOBr4)(OReO3)]2– salt.
Y1  - 2010
U6  - http://dx.doi.org/10.1002/zaac.200900478
SN  - 1521-3749
VL  - 636
IS  - 5
SP  - 779
EP  - 783
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Alberto, Roger
A1  - Abram, Ulrich
T1  - Synthesis, Characterization, and Structures of R3EOTcO3 Complexes (E = C, Si, Ge, Sn, Pb) and Related Compounds
JF  - Inorganic Chemistry
N2  - AgTcO4 reacts with R3ECl compounds (E = C, Si, Ge, Sn, Pb; R = Me, iPr, tBu, Ph), tBu2SnCl2, or PhMgCl under formation of novel trioxotechnetium(VII) derivatives. The carbon and silicon derivatives readily undergo decomposition, which was proven by 99Tc NMR spectroscopy and the isolation of decomposition products such as [TcOCl3(THF)(OH2)]. Compounds [Ph3GeOTcO3], [(THF)Ph3SnOTcO3], [(O3TcO)SntBu2(OH)]2, and [(THF)4Mg(OTcO3)2] are more stable and were isolated in crystalline form and characterized by X-ray diffraction.
Y1  - 2010
U6  - http://dx.doi.org/10.1021/ic1001094
SN  - 1520-510X
VL  - 49
IS  - 7
SP  - 3525
EP  - 3530
PB  - American Chemical Society
CY  - Washington
ER  -