Boride hydride are compounds containing both boride and hydride ions. They can be considered as borides with interstitial hydrogen. Nd2Fe14BH5.5 is used during the manufacture of neodymium iron boride magnets. By subjecting Nd2Fe14B to hydrogen at moderate temperature, it absorbs quite a lot of hydrogen to form the boride hydride. This substance is brittle and can be milled to a fine powder. This can be sintered or glued together.
Structure and bonding edit
Nomenclature edit
Properties edit
Comparisons edit
Caomparable compound classes include the carbide hydrides, and silicide hydrides
Natural occurrence edit
General applications edit
Preparation edit
boride hydrides may be prepared in a molten metal flux, using a metallic hydride as a hydrogen source.
History edit
List edit
crystal
system |
space group | cell Å | volume | Z | density | ref | |
---|---|---|---|---|---|---|---|
Y2Fe14BH4.5 | tetragonal | P42/mnm | a = 8.85, c = 12.14 | 950.8 | 4 | 6.80 | [1] |
Ca54In13B4–xH23+x (2.4 < x < 4) | cubic | Ima3 | a = 16.3608, Z = 2 | 4376.7 | 2 | 2.768 | [2] |
Ce2Fe14BH4 | tetragonal | P42/mnm | a = 8.87, c = 12.265 | 965.0 | 4 | 7.41 | [3] |
Pr2Fe14BH5 | tetragonal | P42/mnm | a = 9.006, c = 12.404 | 1006 | 4 | 7.13 | [4] |
Nd2Fe14BH | tetragonal | P42/mnm | a = 8.841, c = 12.242 | 956.8 | 4 | 7.51 | [5] |
Nd2Fe14BH5 | tetragonal | P42/mnm | a = 8.96, c = 12.44 | 998.7 | 4 | 7.22 | [6] |
Sm2Fe14BH6 | tetragonal | P42/mnm | a = 8.933, c = 12.288 | 980.6 | 4 | 7.45 | [7] |
Ho2Fe14BH5.4 | tetragonal | P42/mnm | a = 8.845, c = 12.082 | 945.2 | 4 | 7.93 | [8] |
Gd2Fe14BH4 | tetragonal | P42/mnm | a = 8.862, c = 12.18 | 956.56 | 4 | 7.72 | |
Tb2Fe14BH3.7 | tetragonal | P42/mnm | a = 8.863, c = 12.144 | 953.9 | 4 | 7.76 | [9] |
Dy2Fe14BH5 | tetragonal | P42/mnm | a = 8.851, c = 12.093 | 947.4 | 4 | 7.87 | [10] |
Ho2Fe14BH5.4 | tetragonal | P42/mnm | a = 8.845, c = 12.082 | 945.2 | 4 | 7.93 | [11] |
Er2Fe14BH3.7 | tetragonal | P42/mnm | a = 8.815, c = 12.028 | 934.6 | 4 | 8.04 | [12] |
Th2Fe14BH4 | tetragonal | P42/mnm | a = 8.87, c = 12.3 | 967.7 | 4 | 8.65 | [13] |
References edit
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.
- ^ Blankenship, Trevor V.; Chen, Banghao; Latturner, Susan E. (2014-05-27). "Ca 54 In 13 B 4– x H 23+ x : A Complex Metal Subhydride Featuring Ionic and Metallic Regions". Chemistry of Materials. 26 (10): 3202–3208. doi:10.1021/cm5007982. ISSN 0897-4756.
- ^ "Ce2Fe14BH4". Materials Database. Retrieved 5 May 2020.
- ^ "Pr2Fe14BH5". Retrieved 5 May 2020.
- ^ "Nd2Fe14BH". MatNavi Materials Database. Retrieved 5 May 2020.
- ^ "Nd2Fe14BH5".
- ^ "Sm2Fe14BH6". Retrieved 5 May 2020.
- ^ "Ho2Fe14BH5.4". Materials Database. Retrieved 5 May 2020.
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.
- ^ "Log in to MatNavi". login-matnavi.nims.go.jp. Retrieved 2020-05-07.