Crystal structure of the new barium borate Ba5(BO3)2(B2O5)

Furmanova, N. G.; Maksimov, B. A.; Molchanov, V. N.; Кох, А. Е.; Кононова, Н. Г.; Федоров, П. П.

doi:10.1134/s1063774506020076

Cited by 22 publications

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“…In addition to the above‐listed compounds, three new compounds were established: 2BaO·5B 2 O 3 , “2BaO·B 2 O 3 ” and 4BaO·B 2 O 3 . It should be emphasized that the right stoichiometry assigned to “2BaO·B 2 O 3 ” is 2.5BaO·B 2 O 3 , which was convincingly shown in . The powder X‐ray diffraction data of compounds were reported.…”

Section: Introductionmentioning

confidence: 70%

“…This indicates the relative stability of the grown crystals in air. The peak indexing revealed that both grains represent intergrowths of two crystals: a new orthophombic phase Ba 3 B 2 O 6 ( a = 13.59 Å; b = 13.67 Å; c = 14.89 Å) and a known orthorhombic Ba 5 (BO 3 ) 2 (B 2 O 5 ) compound ( a = 9.59 Å; b = 16.66 Å; c = 22.92 Å) . Then intensities of reflections of the new phase were extracted, and the dataset with better R int of 7.5% was used for structure solution and refinement.…”

Section: Resultsmentioning

confidence: 99%

“…The compound 2BaO·B 2 O 3 (Ba 2 B 2 O 5 ) with stoichiometry 2:1 was for the first time described by Hübner and then mentioned in a number of works (see, for example,). In it was shown that a compound 2BaO·B 2 O 3 does not exist. There exists a compound with stoichiometry 2.5:1, 5BaO·2B 2 O 3 (Ba 5 (BO 3 ) 2 (B 2 O 5 )) ( P 2 1 2 1 2 1 , a = 9.590 Å, b = 16.659 Å, c = 22.919 Å, Z = 12).…”

Section: Introductionmentioning

confidence: 99%

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BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

et al. 2017

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The first systematic study of the BaO-B 2 O 3 system and barium orthoborate Ba 3 B 2 O 6 (3BaOÁB 2 O 3 ) was reported in 1949. Thereafter, the system was repeatedly refined but the structure of Ba 3 B 2 O 6 compound has not been adequately studied yet. In our study we have, for the first time, obtained the crystalline samples of Ba 3 B 2 O 6 . The solved structure (Pbam, a = 13.5923(4) A, b = 13.6702 The studies of BaO-B 2 O 3 system are complicated by the high reactivity and hygroscopicity of melts. High viscosity of the melts and their tendency for undercooling, glass formation and appearance of metastable equilibriums present a particular problem.Barium oxide BaO melts at 1923°C. The compound crystallizes in a cubic crystal system with the rock salt structure. Boric oxide B 2 O 3 is extremely hydroscopic and is very difficult to crystallize, its melting temperature is 450°C. The structures of two polymorphous modifications of boric oxideÀB 2 O 3 (I) (P3 1 21) 4 and B 2 O 3 (II) (Ccm2 1 ) 5 Àwere studied with adequate accuracy.For the first time, the BaO-B 2 O 3 system was systematically studied by Levin & McMurdie (1949) 6 with the use of annealing and quenching procedures, X-ray powder diffraction and thermal analysis. The middle part of the phase diagram was repeatedly studied by H€ ubner (1969). 8 In addition to the above-listed compounds, three new compounds were established: 2BaOÁ5B 2 O 3 , "2BaOÁB 2 O 3 " and 4BaOÁB 2 O 3 . It should be emphasized that the right stoichiometry assigned to "2BaOÁB 2 O 3 " is 2.5BaOÁB 2 O 3 , which was convincingly shown in.

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Section: Introductionmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

et al. 2017

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“…During the study of the ternary system CaO-CdO-B 2 O 3 we find ac alcium cadmium borate Ca 6.6 [6,7]. The sum of the three O-B-O angles in each of the two independent BO 3 triangles is nearly equal to 360°(359.90°and 359.94°,respectively) which indicates that each BO 3 trigonal groups in the B 2 O 5 butterfly-shaped group is almost perfectly planar.…”

Section: Discussionmentioning

confidence: 91%

Crystal structure of calcium cadmium borate, Ca6.6Cd1.4(B2O5)4

Jiao¹,

Shen²,

Wang³

et al. 2010

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of material (4) [6,7]. The sum of the three O-B-O angles in each of the two independent BO 3 triangles is nearly equal to 360°(359.90°and 359.94°,respectively) which indicates that each BO 3 trigonal groups in the B 2 O 5 butterfly-shaped group is almost perfectly planar. However, the 'butterfly' in the structure is essentially nonplanar. The angle between the planes of the BO 3 triangles is 15.37°and the angle at the bridging Oatom is 138

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“…Among the known compounds, e.g. BaO(B 2 O 3 ) 4, α‐BaB 4 O 7 5, β‐BaB 2 O 4 (BBO) 6, Ba 5 (BO 3 ) 2 (B 2 O 5 ) 7, II‐BaB 2 O 4 8, β‐BaB 4 O 7 9, and BaB 8 O 13 10, the β‐BaB 2 O 4 (BBO) has gained particular attention owing to its application as an excellent nonlinear optical (NLO) crystal material. The anionic group theory 11, based on the research of barium borates, was established to demonstrate the correlation between nonlinear optical properties and structures of the component groups of atoms, and it has motivated scientists to fabricate novel polyborate anionic groups.…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Flux Synthesis and Characterizations of a New Layered Barium Borate BaB₈O₁₁(OH)₄

Sun

Huang

et al. 2010

Zeitschrift anorg allge chemie

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The new hydroxyl barium borate BaB8O11(OH)4 was synthesized by using a low‐temperature molten salt technique with boric acid as flux at 458 K. Its crystal structure was determined from single‐crystal X‐ray data. The compound crystallizes in the monoclinic space group P121/n1 (No.14) with unit cell of a = 790.80(16) pm, b = 1393.9(3) pm, c = 1004.7(2) pm, β = 90.00(3)°, V = 1107.6(4) × 106 pm3, Z = 2. It is isostructural to PbB8O11(OH)4, but obviously different from AB8O11(OH)4 (A = Ca, Sr) in cell. The crystal structure of BaB8O11(OH)4 is built from corrugated borate layers,{[B8O11(OH)4]2–}n parallel to (010), which are stacked along the b axis and are linked by barium atoms. The borate layer consists of [B6O9(OH)] clusters as fundamental building blocks (FBBs), which are connected with surrounding four FBBs by sharing common oxygen vertices to form a sheet, and the sheet is further decorated with the flanking [B2O2(OH)3] dimers. FT‐IR and Raman spectroscopy, DTA‐TG, and the identification of an intermediate phase are presented.

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Crystal structure of the new barium borate Ba5(BO3)2(B2O5)

Cited by 22 publications

References 6 publications

BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

Crystal structure of calcium cadmium borate, Ca6.6Cd1.4(B2O5)4

Low Temperature Flux Synthesis and Characterizations of a New Layered Barium Borate BaB₈O₁₁(OH)₄

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Crystal structure of the new barium borate Ba5(BO3)2(B2O5)

Cited by 22 publications

References 6 publications

BaO−B2O3 system and its mysterious member Ba3B2O6

BaO−B2O3 system and its mysterious member Ba3B2O6

Crystal structure of calcium cadmium borate, Ca6.6Cd1.4(B2O5)4

Low Temperature Flux Synthesis and Characterizations of a New Layered Barium Borate BaB8O11(OH)4

Contact Info

Product

Resources

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BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

BaO−B₂O₃ system and its mysterious member Ba₃B₂O₆

Low Temperature Flux Synthesis and Characterizations of a New Layered Barium Borate BaB₈O₁₁(OH)₄