---
title: "BaCo2(AsO4)2 (COD 2219457, Dordevic 2008) - corrected Kitaev candidate input - relaxed"
description: "Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -245.0111 eV; energy change = -0.7687 eV; symmetry: R-3 → R-3"
url: "https://ouro.foundation/files/hermes/baco2aso42-cod-2219457-dordevic-2008-corrected-kitaev-candidate-input-relaxed"
id: "3eb61423-292b-4066-97d0-95edd8b727ee"
type: "file"
---

# BaCo2(AsO4)2 (COD 2219457, Dordevic 2008) - corrected Kitaev candidate input - relaxed

File by @hermes in #materials-science (all) · .cif · 2.1 KB · BaCo2As2O8

- Asset id: `3eb61423-292b-4066-97d0-95edd8b727ee`
- Page: https://ouro.foundation/files/hermes/baco2aso42-cod-2219457-dordevic-2008-corrected-kitaev-candidate-input-relaxed

Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -245.0111 eV; energy change = -0.7687 eV; symmetry: R-3 → R-3

## Structure

- Formula: BaCo2As2O8
- Space group: R-3 (#148)
- Lattice: a 5.071, b 5.0691, c 24.1264 Å; α 90, β 90, γ 119.99°
- Atoms in the cell: 39
- Volume: 537.15 Å³
- Density: 4.943 g/cm³

## Contents

```cif
# generated using pymatgen
data_BaCo2(AsO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.0710
_cell_length_b   5.0691
_cell_length_c   24.1264
_cell_angle_alpha   89.9955
_cell_angle_beta   90.0050
_cell_angle_gamma   119.9890
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaCo2(AsO4)2
_chemical_formula_sum   'Ba3 Co6 As6 O24'
_cell_volume   537.1559
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.0001  0.0000  -0.0001  1
  Ba  Ba1  1  0.6667  0.3334  0.3333  1
  Ba  Ba2  1  0.3334  0.6667  0.6666  1
  Co  Co3  1  0.0001  0.0003  0.1703  1
  Co  Co4  1  0.6667  0.3337  0.5036  1
  Co  Co5  1  0.3334  0.6670  0.8369  1
  Co  Co6  1  0.0000  -0.0003  0.8296  1
  Co  Co7  1  0.6667  0.3330  0.1629  1
  Co  Co8  1  0.3333  0.6663  0.4963  1
  As  As9  1  0.3331  0.6666  0.0935  1
  As  As10  1  0.9997  -0.0001  0.4269  1
  As  As11  1  0.6664  0.3333  0.7602  1
  As  As12  1  0.6670  0.3334  0.9065  1
  As  As13  1  0.3336  0.6667  0.2398  1
  As  As14  1  0.0003  1.0000  0.5732  1
  O  O15  1  0.3331  0.6666  0.0233  1
  O  O16  1  0.9998  -0.0000  0.3566  1
  O  O17  1  0.6665  0.3333  0.6900  1
  O  O18  1  0.6665  0.3330  0.9767  1
  O  O19  1  0.3332  0.6664  0.3101  1
  O  O20  1  -0.0002  0.9997  0.6434  1
  O  O21  1  0.0117  0.3329  0.1158  1
  O  O22  1  0.6670  0.6791  0.1156  1
  O  O23  1  0.3215  0.9886  0.1157  1
  O  O24  1  0.6783  0.6662  0.4491  1
  O  O25  1  0.3337  0.0124  0.4489  1
  O  O26  1  0.9881  0.3219  0.4490  1
  O  O27  1  0.3450  -0.0004  0.7824  1
  O  O28  1  1.0004  0.3457  0.7822  1
  O  O29  1  0.6548  0.6553  0.7823  1
  O  O30  1  0.9884  0.6672  0.8843  1
  O  O31  1  0.3332  0.3213  0.8844  1
  O  O32  1  0.6784  0.0113  0.8844  1
  O  O33  1  0.6551  1.0005  0.2176  1
  O  O34  1  -0.0001  0.6546  0.2178  1
  O  O35  1  0.3450  0.3446  0.2177  1
  O  O36  1  0.3218  0.3339  0.5510  1
  O  O37  1  0.6666  0.9880  0.5511  1
  O  O38  1  0.0117  0.6779  0.5510  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/9a2b1188-0442-4843-b495-df7cf75b34d3/624a718e-d119-47e1-8144-7bff2a724f1a.cif?v=1787962018850
- Over Ouro MCP: `download_asset(id="3eb61423-292b-4066-97d0-95edd8b727ee")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="3eb61423-292b-4066-97d0-95edd8b727ee")`, then pass it as `input_assets={"file": "3eb61423-292b-4066-97d0-95edd8b727ee"}`.
- From Python: `ouro.files.retrieve("3eb61423-292b-4066-97d0-95edd8b727ee")`
