The Gold-rich Indide Sr5Au13.5In8.5 Muts, I.; Rodewald, U. Ch; Zaremba, V. I. ...
Zeitschrift für Naturforschung. B, A journal of chemical sciences,
11/2011, Letnik:
66
Journal Article
New auride Ca3Au3In was synthesized from the elements in a sealed tantalum tube in a high‐frequency furnace. Ca3Au3In was investigated by X‐ray powder and single crystal diffraction: ordered Ni4B3 ...type, Pnma, a = 1664.1(6), b = 457.3(2), c = 895.0(3) pm, wR2 = 0.0488, 1361 F2 values, and 44 variables. The three crystallographically independent boron positions of the Ni4B3 type are occupied by the gold atoms, while the four nickel sites are occupied by calcium and indium in an ordered manner. All gold atoms have trigonal prismatic coordination, i.e. Ca6 prisms for Au1 and Au2 and Ca4In2 prisms for Au3. While the Au3 atoms are isolated, we observe Au1–Au1 and Au2–Au2 zig‐zag chains at Au–Au distances of 292 and 284 pm. These slabs resemble the CrB type structure of CaAu. Consequently Ca3Au3In can be considered as a ternary auride. Together the Au2, Au3 and indium atoms build up a three‐dimensional Au2In polyanionic network (281–293 pm Au–In) in which the chains of Au1 centered trigonal prisms are embedded. The crystal chemical similarities with the structures of Ni4B3, CaAuIn, and CaAu are discussed.
The metal‐rich indides Ca2Pd2In and Ca2Pt2In were synthesised from the elements in sealed tantalum ampoules in an induction furnace. Both samples were investigated by X‐ray powder and single crystal ...diffraction: HT‐Pr2Co2Al type, C2/c, a = 1017.6(5), b = 574.1(3), c = 812.7(3) pm, β = 104.54(2)°, wR2 = 0.0344, 590 F2 values for Ca2Pd2In and a = 1004.3(3), b = 568.9(1), c = 813.1(2) pm, β = 104.25(2)°, wR2 = 0.0435, 654 F2 values for Ca2Pt2In with 25 variables per refinement. The structure contain Pd2 (272 pm) and Pt2 (264 pm) dumb‐bells with a trigonal prismatic coordination for each transition metal atom. These AlB2 related slabs are condensed via common edges. Together the palladium and indium atoms build up three‐dimensional Pd2In and Pt2In polyanionic networks in which the calcium atoms fill larger channels. The bonding of calcium to the network proceeds via shorter Ca–Pd and Ca–Pt contacts. Ca2Pd2In and Ca2Pt2In are Pauli paramagnets.
The Solid Solution Lu2-xScxSiO5 Yahia, H. B.; Rodewald, U. Ch; Heying, B. ...
Zeitschrift für Naturforschung. B, A journal of chemical sciences,
11/2011, Letnik:
66
Journal Article
The purpose of this prospective trial was to study a combined-modality treatment including local consolidation by surgery or radiotherapy and high-dose chemotherapy (HDC) followed by peripheral-blood ...stem-cell (PBSC) transplantation. In all, 48 patients with oligometastatic breast cancer amenable to local treatment after induction chemotherapy with epirubicin and cyclophosphamide or paclitaxel and cisplatin, depending on prior adjuvant chemotherapy, were enrolled. The median follow-up was 41 months (range, 7-85 months). PBSC were collected in 47 patients, and 40 received one or two courses of HDC. Local therapy was given in 37 patients. No treatment-related deaths occurred. Of 47 evaluable patients, 36 (75% of intention-to-treat population) had no evidence of disease or complete remission after completion of therapy. Six patients (12.5%) had partial response, two patients (4%) no change, and three patients (6%) progressive disease. The median time to progression and overall survival was 17.5 (95% confidence interval (CI), 14-21 months) and 42.2 months (95% CI, 33-52 months), respectively, and 27% of patients were progression free after 5 years. In conclusion, patients with oligometastatic breast cancer can be treated safely with this combined modality protocol with promising relapse-free survivals.
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