Ingo Widmann
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View article: Ratiometric Boltzmann thermometry with Cr3+ in strong ligand fields: Efficient nonradiative coupling for record dynamic working ranges
Ratiometric Boltzmann thermometry with Cr3+ in strong ligand fields: Efficient nonradiative coupling for record dynamic working ranges Open
A new ratiometric Boltzmann thermometry approach is presented for the narrow-line red-emitting bright phosphor Al 0.993 Cr 0.007 B 4 O 6 N. It relies on thermalization between the two excited states 2 E g ( 2 G) and 2 T 1 g ( 2 G) of Cr 3+…
View article: The compound (NH<sub>4</sub>)<sub>0.64</sub>B<sub>4.36</sub>O<sub>6.72</sub>(OH)<sub>0.28</sub>(NH<sub>3</sub>)<sub>0.36</sub> representing the first ammine/ammonium borate
The compound (NH<sub>4</sub>)<sub>0.64</sub>B<sub>4.36</sub>O<sub>6.72</sub>(OH)<sub>0.28</sub>(NH<sub>3</sub>)<sub>0.36</sub> representing the first ammine/ammonium borate Open
Orthorhombic crystals of the composition (NH 4 ) 0.64 B 4.36 O 6.72 (OH) 0.28 (NH 3 ) 0.36 have been synthesized from boron oxide, boron nitride and boric acid in a Walker-type multianvil press under high-pressure/high-temperature conditio…
View article: Extended investigations on the pressure stability of AlB<sub>4</sub>O<sub>6</sub>N:Cr<sup>3+</sup>
Extended investigations on the pressure stability of AlB<sub>4</sub>O<sub>6</sub>N:Cr<sup>3+</sup> Open
Recently, we discovered the aluminium oxonitridoborate AlB 4 O 6 N:Cr 3+ , whose high-pressure/high-temperature synthesis could be optimized in the last months. This compound shows extraordinary luminescence properties, that closely resemb…
View article: High-pressure synthesis and crystal structure of Ga<sub>5</sub>Na<sub>1–<i>x</i> </sub>B<sub>12</sub>O<sub>26–<i>x</i> </sub>(OH)<sub> <i>x</i> </sub> (<i>x</i> = 0.12)
High-pressure synthesis and crystal structure of Ga<sub>5</sub>Na<sub>1–<i>x</i> </sub>B<sub>12</sub>O<sub>26–<i>x</i> </sub>(OH)<sub> <i>x</i> </sub> (<i>x</i> = 0.12) Open
Tetragonal Ga 5 Na 1– x B 12 O 26– x (OH) x ( x = 0.12) was synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 12.4 GPa/1,280 °C. The compound crystallizes in the space group I 4 1 / acd (n…
View article: High-pressure synthesis and crystal structure of Al<sub>3</sub>BO<sub>6</sub>
High-pressure synthesis and crystal structure of Al<sub>3</sub>BO<sub>6</sub> Open
Orthorhombic Al 3 BO 6 was synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 5 GPa and 1,200 °C, respectively. Its structure has been determined via single-crystal diffraction and is isoty…
View article: Real Competitors to Ruby: The Triel Oxonitridoborates AlB<sub>4</sub>O<sub>6</sub>N, Al<sub>0.97</sub>Cr<sub>0.03</sub>B<sub>4</sub>O<sub>6</sub>N, and Al<sub>0.83</sub>Cr<sub>0.17</sub>B<sub>4</sub>O<sub>6</sub>N
Real Competitors to Ruby: The Triel Oxonitridoborates AlB<sub>4</sub>O<sub>6</sub>N, Al<sub>0.97</sub>Cr<sub>0.03</sub>B<sub>4</sub>O<sub>6</sub>N, and Al<sub>0.83</sub>Cr<sub>0.17</sub>B<sub>4</sub>O<sub>6</sub>N Open
AlB 4 O 6 N, Al 0.97 Cr 0.03 B 4 O 6 N, and Al 0.83 Cr 0.17 B 4 O 6 N are the first representatives of the recently established structure‐family of oxonitridoborates containing Al 3+ . These compounds are isotypic to CrB 4 O 6 N and are sy…
View article: CSD 2269669: Experimental Crystal Structure Determination
CSD 2269669: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2269668: Experimental Crystal Structure Determination
CSD 2269668: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: High‐Pressure/High‐Temperature Synthesis of <i>Ln</i>B<sub>3.6</sub>O<sub>7</sub> (<i>Ln=</i>La, Pr) – Two Unique Lanthanoid Borates in a Defective <i>α</i>‐SrB<sub>4</sub>O<sub>7</sub>‐Structure‐Type
High‐Pressure/High‐Temperature Synthesis of <i>Ln</i>B<sub>3.6</sub>O<sub>7</sub> (<i>Ln=</i>La, Pr) – Two Unique Lanthanoid Borates in a Defective <i>α</i>‐SrB<sub>4</sub>O<sub>7</sub>‐Structure‐Type Open
The orthorhombic phases LaB 3.6 O 7 and PrB 3.6 O 7 were obtained by high‐pressure/high‐temperature syntheses at 11 GPa and temperatures of 1130 °C (LaB 3.6 O 7 ) as well as 850 °C (PrB 3.6 O 7 ) using a modified Walker‐type multianvil app…
View article: CSD 2047607: Experimental Crystal Structure Determination
CSD 2047607: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2047608: Experimental Crystal Structure Determination
CSD 2047608: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2047606: Experimental Crystal Structure Determination
CSD 2047606: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Crystal Structure of <i>c</i>‐<i>M</i><sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) (<i>M</i>=Al, Al/Ga, Ga/In) – Three Disordered Cubic Trielborates Synthesized under High‐Pressure Conditions
Crystal Structure of <i>c</i>‐<i>M</i><sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) (<i>M</i>=Al, Al/Ga, Ga/In) – Three Disordered Cubic Trielborates Synthesized under High‐Pressure Conditions Open
The isotypic trielborates c ‐Al 5 B 12 O 25 (OH), c ‐Al 1.7 Ga 3.3 B 12 O 25 (OH), and c ‐Ga 4 InB 12 O 25 (OH) were synthesized under high‐pressure/high‐temperature conditions of ≥12 GPa and ≥1100 °C. The three cubic compounds crystallize…
View article: CSD 2027675: Experimental Crystal Structure Determination
CSD 2027675: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CCDC 2002397: Experimental Crystal Structure Determination
CCDC 2002397: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2002398: Experimental Crystal Structure Determination
CCDC 2002398: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: High-pressure synthesis and crystal structure of HP-Al<sub>2</sub>B<sub>3</sub>O<sub>7</sub>(OH)
High-pressure synthesis and crystal structure of HP-Al<sub>2</sub>B<sub>3</sub>O<sub>7</sub>(OH) Open
Orthorhombic HP-Al 2 B 3 O 7 (OH) was synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 12.4 GPa and 1200 °C, respectively. Its structure is isotypic to that of Ga 2 B 3 O 7 (OH) and has b…
View article: Al<sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) and Ga<sub>4</sub>InB<sub>12</sub>O<sub>25</sub>(OH) – two additional triel borates with the structure type <i>M</i> <sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) (<i>M</i> = Ga, In)
Al<sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) and Ga<sub>4</sub>InB<sub>12</sub>O<sub>25</sub>(OH) – two additional triel borates with the structure type <i>M</i> <sub>5</sub>B<sub>12</sub>O<sub>25</sub>(OH) (<i>M</i> = Ga, In) Open
The isotypic triel borates Al 5 B 12 O 25 (OH) and Ga 4 InB 12 O 25 (OH) were synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 12.0 GPa/1400 °C and 12.3 GPa/1200 °C, respectively. The cry…