Synthesis, crystal structure, spectrum properties, and electronic structure of a novel non-centrosymmetric borate, BiCd3(AlO)3(BO3)4

Synthesis, structural characterization, and photoluminescence properties of Eu3+‐doped Mg3‐xEux(BO3)2 phosphor

“…The vibrational bands observed between 1200 and 1600 cm −1 are assigned as the first region which is corresponding to the asymmetric stretching relaxation of the B–O bond of trigonal BO 3 units. The second region is located between 800 and 1200 cm −1 and is due to the B–O bond stretching of tetrahedral BO 4 units and the last band around 700 cm −1 is due to the bending of B–O–B linkages in the borate network . The structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom.…”

“…The second region is located between 800 and 1200 cm À1 and is due to the B-O bond stretching of tetrahedral BO 4 units and the last band around 700 cm À1 is due to the bending of B-O-B linkages in the borate network. [46][47][48][49][50] The structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom. For this reason, the infrared spectrum of Mg 2 B 2 O 5 can be interpreted on the basis of these two, nonÀidentical joined triangles.…”

Effect of magnesium source on the fabrication of kotoite Mg3B2O6 ceramic

“…The bands detected between 1200 and 1600 cm À1 are corresponding to the first region which is due to asymmetric stretching relaxation of the B-O bonds of trigonal BO 3 units. The second region is located between 800 and 1200 cm À1 , and is due to the B-O bond stretching of tetrahedral BO 4 units and the last band at around 700 cm À1 is due to the bending [26][27][28][29][30] On the other hand, the structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom. For this reason, the infrared spectrum of Mg 2 B 2 O 5 can be interpreted on the basis of these two nonÀidentical joined triangles.…”

Synthesis, Crystal Structure, and Spectrum Properties of a New Quaternary Borate NaSr7AlB18O36 with the Cyclic B18O36 18− Group, Notation of 6 × (3[2Δ + 1T])

“…Note that tetrahedral, trigonal bipyramidal, and octahedral oxygen coordination geometries have been previously reported for the Al atoms in the aluminium oxides. Among them, AlO 5 trigonal bipyramids are rare, but have been found in the structure of SrO (Al 2 O 3 ) 6 [28], while AlO 4 tetrahedra and AlO 6 octahedra are more popular: the former have been encountered in BaAl 2 B 2 O 7 [8] as well as K 3 AlB 8 O 15 [29] and the latter observed in AlBO 3 [30], TmAl 3 (BO 3 ) 4 [31], and BiCd 3 (AlO) 3 (BO 3 ) 4 [32]. The Al atom is located on a crystallographic 3 axis, thereby giving a single Al-O bond distance of 1.895(3) Å , which is comparable to those found in AlBO 3 (average Al-O = 1.923 Å ) and TmAl 3 (BO 3 ) 4 (average Al-O = 1.901 Å ), where AlO 6 groups have also been observed [30,31].…”