New Intermetallic Zinc Compounds with Ordering Variants of the KHg2 and LT-SrZn5 Type
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Christian Schwickert
The intermetallic zinc compounds CaAuZn, SrPdZn, SrPtZn, SrAuZn, BaPd1.57 Zn3.43, and BaAu1.41Zn3.59 were synthesized from the elements in sealed niobium ampoules in an induction furnace. The equiatomic compounds crystallize with the orthorhombic TiNiSi-type structure, space group Pnma. Single-crystal X-ray data exhibited small degrees of Au=Zn mixing within the three-dimensional [AuZn] networks and resulted in the compositions CaAu1.02Zn0.98 and SrAu1.03Zn0.97 for two investigated single crystals. BaPd1.57 Zn3.43 and BaAu1.41 Zn3.59 adopt partially ordered versions of the LT-SrZn5 type, space group Pnma. Both structures were refined on the basis of X-ray single-crystal diffractometer data. a=1331.13(6), b=531.45(3), c=682.20(4) pm, wR=0.0245, 1138 F2 values, 39 variables for BaPd1.57Zn3.43 and a=1344.35(2), b=537.47(2), c=691.22(4) pm, wR=0.0441, 931 F2 values, 37 refined variables for BaAu1.41Zn3.59. The transition metal and zinc atoms form a complex three-dimensional network of (T, Zn)4 tetrahedra which are condensed via common corners and T/Zn-T/Zn bonds. Large cavities within these networks are filled by the barium atoms which have coordination number 19, i. e. Ba@(T, Zn)17Ba2.
Graphical Abstract
New Intermetallic Zinc Compounds with Ordering Variants of the KHg2 and LT-SrZn5 Type
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Artikel in diesem Heft
- Synthesis and Crystal Structure of a “High-temperature” Phase of Li[H2NC(O)NH], the Missing Alkali-Metal Ureate
- Strukturen von polaren Magnesiumorganylen: Synthese und Struktur von Basen-Addukten des Bis(pentamethylcyclopentadienyl)magnesiums
- The Mixed-valent Mercury(I/II) Compounds Hg3(HAsO4)2 and Hg6As2O10
- New Intermetallic Zinc Compounds with Ordering Variants of the KHg2 and LT-SrZn5 Type
- Effects of Metal Ions and N-Donor Ligands with Different Coordination Characters on the Construction of d10 Metal-organic Complexes with Selective Photocatalytic Activities
- Synthesis and Characterization of Novel Re(BIAN)(CO)3Cl Derivatives Including the First Example of a Water-soluble Tricarbonyl Rhenium(I) Complex with Bis(imino)acenaphthene Ligands
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- Vinylsilylferrocenes and Ethynyl(vinyl)silylferrocenes. Synthesis, Multinuclear Magnetic Resonance Study and DFT Calculations
- One-pot Multi-component Synthesis of Mono- and Bis-indolylimidazole Derivatives Using Zn2+@KSF and Their Antibacterial Activity
- Catalyst-free, Solvent-promoted and Scalable Multicomponent Synthesis of 3-Aminoalkylated Indoles via a Mannich-type Reaction
- Synthesis and Reactions of New Chiral Linear Dipeptide Candidates Using Nalidixic Acid as Starting Material
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- Two Rare Hydroazulene-type Sesquiterpenes from the Roots of Aristolochia yunnanensis
- Spiroalkaloids and Coumarins from the Stem Bark of Pauridiantha callicarpoides
