Research/Sitter/MAGNDATA / 0.1178_Cu2Cl(OH)3.mcif

Cu₂ClO₃H₃

MAGNDATA entry 0.1178 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 18.1 K (−255 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P c BNS 7.24
Point group	m1
Parent space group	P 21/n No. 14
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.1675 · b 6.8327 · c 9.1517 Å · α 90° · β 99.492° · γ 90°
Transition	18.1 K (−255 °C)
Measured at	1.7 K
Magnetic ions	Cu
Largest moment component	0.3 μ_B
Method	SND

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in P c →

Atom sites · 18 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cu1	Cu	0	0.5	0.5	−0.3	0	−0.29	0.3813
Cu2	Cu	0	0	0	0.3	0	0.29	0.3813
Cu3_1	Cu	0.2648	0.2373	0.7521	0.29	0.25	0	0.3829
Cu3_2	Cu	0.2352	0.7373	0.7479	0.29	−0.25	0	0.3829
Cl1_1	Cl	0.1118	0.9925	0.303
Cl1_2	Cl	0.3882	0.4925	0.197
O1_1	O	0.2975	0.2963	0.5483
O1_2	O	0.2025	0.7963	0.9517
O2_1	O	0.4168	0.9703	0.771
O2_2	O	0.0832	0.4703	0.729
O3_1	O	0.2484	0.6811	0.5378
O3−2	O	0.2516	0.1811	0.9622
H1_1	H	0.2881	0.1807	0.4888
H1_2	H	0.2119	0.6807	0.0112
H2_1	H	0.5383	0.9555	0.7181
H2_2	H	0.9617	0.4555	0.7819
H3_1	H	0.2286	0.7885	0.4698
H3_2	H	0.2714	0.2885	0.0302

Moment components are along the crystal axes a, b, c (μ_B), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

L. Stodter et al. Phys. Rev. Lett. (2026) · doi:10.1103/xmh8-68vk

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1178_Cu2Cl(OH)3.mcif from MAGNDATA · entry page

sha256 of this copy: 6270522d98f28656ddd92f26c9993904fa6ac6180feed61ebc2711ee965d853e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1178_Cu2Cl(OH)3.mcif.

Cu2ClO3H3

Symmetry

Source

Original file

Cu₂ClO₃H₃