Synthesis, structure, and properties of the orthoborate SrCu sub 2 (BO sub 3 ) sub 2

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1016/0022-4596(91)90316-A· OSTI ID:5730550

Smith, R W; Keszler, D A ^[1]

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1. Oregon State Univ., Corvallis (United States)

The new orthoborate SrCu{sub 2}(BO{sub 3}){sub 2} has been synthesized and its structure determined by single-crystal X-ray methods. It crystallizes in space group I{bar 4}2 m in a cell of dimensions a = 8.995(1) {angstrom}, c = 6.649(1) {angstrom}, and V = 537.9(1) {angstrom}{sup 3} with Z = 4. The structure was determined from 604 independent reflections and refined to the final residuals R = 0.040 and R{sub w} = 0.051. It is composed of CuO{sub 4} rectangles and BO{sub 3} triangles that are connected by sharing vertices and edges to form two-dimensional sheets; Sr atoms are interleaved between successive sheets. The compound decomposes at 970(3)C to CuO and amorphous strontium borate; the CuO is reduced to finely divided Cu metal by heating at 300C in flowing H{sub 2}. The corrected molar susceptibility of the material is 2.16(3) BM at 22C.

• OSTI ID: 5730550
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 93:2; ISSN JSSCB; ISSN 0022-4596
• Country of Publication: United States
• Language: English

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ALKALINE EARTH METAL COMPOUNDS
BORATES
BORON COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COHERENT SCATTERING
COPPER
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
CRYSTALS
DATA
DECOMPOSITION
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
GRAVIMETRIC ANALYSIS
INFORMATION
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
METALS
MICROSTRUCTURE
MONOCRYSTALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUANTITATIVE CHEMICAL ANALYSIS
REDUCTION
SCATTERING
STRONTIUM COMPOUNDS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION