Crystal structure of BaMg 2 Si 2 O 7 was determined and refined by a combined powder X-ray and neutron Rietveld method (monoclinic, C2/c, no. 15, The structure contains a single crystallographic type of Ba atom coordinated to eight O atoms with C 1 (1) site symmetry. Under 325-nm excitation Ba 0.98
Crystal structure and luminescence of 2,7-dimethylnaphthalene-1-carbonitrile
✍ Scribed by Laurie A. Brown; Frank R. Fronczek; Andrew W. Maverick
- Book ID
- 110275772
- Publisher
- Springer
- Year
- 1999
- Tongue
- English
- Weight
- 78 KB
- Volume
- 29
- Category
- Article
- ISSN
- 1572-8854
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The crystal structure of strontium dialuminodiborate SrAl 2 B 2 O 7 has been established by single-crystal X-ray di4raction methods. The compound crystallizes in the trigonal system (space group R3 c, Z ؍ 6) with cell parameters a ؍ 4.893(1) A > and c ؍ 47.78(1) A > . Aluminium and boron atoms
## Abstract The compounds 6,7‐dihydro‐2‐methoxy‐4‐(4‐methylphenyl)‐5__H__ ‐benzo[6.7]cyclohepta[1,2__‐b__ ]pyridine‐3‐carbonitrile (compound IIIa) and 4‐(4‐chlorophenyl)‐6,7‐dihydro‐2‐methoxy‐5__H__ ‐benzo[6,7]cyclohepta[1,2‐__b__ ]pyridine‐3‐carbonitrile (compound IIIb) were synthesized and their