Table 1. Compilation of all published compounds adopting the (NH4)Fe(HPO4)2 structure type (Yakubovich, 1993 ▸) and the RbFe(HPO4)2 structure type (Lii & Wu, 1994 ▸).
(NH4)Fe(HPO4)2 type (P
 , Z = 3) |
|||||||
| a (Å) | b (Å) | c (Å) | α (°) | β (°) | γ (°) | V (Å3) | |
| CsSc(HAsO4)2 a | 7.520 (2) | 9.390 (2) | 10.050 (2) | 65.48 (3) | 70.66 (3) | 70.10 (3) | 592.0 (2) |
| TlFe(HAsO4)2 | 7.346 (2) | 9.148 (2) | 9.662 (2) | 64.89 (3) | 70.51 (3) | 69.94 (3) | 538.6 (2) |
| (NH4)Fe(HAsO4)2 b | 7.3473 (7) | 9.1917 (8) | 9.7504 (9) | 64.545 (5) | 70.710 (7) | 69.638 (6) | 544.54 (2) |
| (NH4)Fe(HPO4)2 c | 7.185 (3) | 8.857 (3) | 9.478 (3) | 64.79 (3) | 70.20 (3) | 69.38 (3) | 498.0 (3) |
| (NH4)Fe(HPO4)2 d | 7.121 | 8.839 | 9.465 | 64.598 | 70.321 | 69.574 | 491.88 |
| (NH4)V(HPO4)2 e | 7.173 (2) | 8.841 (2) | 9.458 (2) | 65.08 (2) | 70.68 (2) | 69.59 (2) | 497.59 (2) |
| (NH4)(Al0.64Ga0.36)f(HPO4)2 | 7.109 (4) | 8.695 (4) | 9.252 (6) | 65.01 (4) | 70.25 (5) | 69.01 (4) | 472.1 (4) |
| (ND4)Fe(DPO4)2 d,g | 7.11830 (3) | 8.83828 (4) | 9.46407 (4) | 64.5802 (4) | 70.3127 (4) | 69.5733 (5) | 491.495 (4) |
| KFe(HPO4)2 h | 7.20 | 8.76 | 9.49 | 64.58 | 69.82 | 70.13 | |
| (H3O)Al(HPO4)2 i | 7.1177 (2) | 8.6729 (2) | 9.2200 (3) | 65.108 (2) | 70.521 (1) | 68.504 (2) | 469.4 (2) |
| CsIn(HPO4)2 j | 7.4146 (3) | 9.0915 (3) | 9.7849 (3) | 65.525 (3) | 70.201 (3) | 69.556 (3) | 547.77 (4) |
| RbFe(HPO4)2 j | 7.2025 (4) | 8.8329 (8) | 9.4540 (8) | 65.149 (8) | 70.045 (6) | 69.591 (6) | 497.44 (8) |
| RbV(HPO4)2 k | 7.188 (2) | 8.831 (1) | 9.450(2 | 65.34 | 70.449 | 69.739 | 498.5 (2) |
RbFe(HPO4)2 type (R
c, Z = 18) |
|||||||
| RbIn(HAsO4)2 l | 8.512 (1) | 8.512 (1) | 56.43 (1) | 90 | 90 | 120 | 3541.1 (9) |
| CsIn(HAsO4)2 l | 8.629 (1) | 8.629 (1) | 56.99 (1) | 90 | 90 | 120 | 3674.7 (9) |
| RbAl(HAsO4)2 m | 8.318 (1) | 8.318 (1) | 52.87 (1) | 90 | 90 | 120 | 3167.9 (9) |
| RbFe(HAsO4)2 | 8.425 (1) | 8.425 (1) | 54.75 (1) | 90 | 90 | 120 | 3365.5 (9) |
| CsFe(HAsO4)2 m | 8.525 (1) | 8.525 (1) | 55.00 (1) | 90 | 90 | 120 | 3461.5 (9) |
| RbFe(HPO4)2 n | 8.160 (1) | 8.160 (1) | 52.75 (1) | 90 | 90 | 120 | 3041.82 |
| RbAl(HPO4)2 j | 8.0581 (18) | 8.0581 (18) | 51.081 (12) | 90 | 90 | 120 | 2872 (11) |
| RbGa(HPO4)2 j | 8.1188 (15) | 8.1188 (15) | 51.943 (4) | 90 | 90 | 120 | 2965.1 (8) |
Notes: (a) Schwendtner & Kolitsch (2004 ▸); (b) Ouerfelli et al. (2014 ▸); (c) Yakubovich (1993 ▸), transformed from I
; (d) Alfonso et al. (2011 ▸), converted to reduced cell; (e) Bircsak & Harrison (1998 ▸); (f) Stalder & Wilkinson (1998 ▸); (g) Alfonso et al. (2010 ▸); (h) Smith & Brown (1959 ▸); (i) Yan et al. (2000 ▸); (j) Lesage et al. (2007 ▸); (k) Haushalter et al. (1995 ▸), converted to reduced cell; (l) Schwendtner & Kolitsch (2017 ▸); (m) Schwendtner & Kolitsch (2018 ▸); (n) Lii & Wu (1994 ▸).