Crystals of the compound LiCo(SO₄)OH were synthesised at low-hydrothermal conditions, and the crystal structure was determined and refined from single crystal X-ray diffraction data. LiCo(SO₄)OH crystallises monoclinic, space group P2₁/c, Z = 4, a = 9.586(2), b = 5.425(1), c = 7.317(1) Å, β = 109.65(1)°, V = 358.3 ų, wR2 = 0.0485 (2215 unique reflections, 78 variables). The structure is built from chains of edge-sharing, quite strongly bond-length and -angle distorted Co(OH)₃O₃ octahedra (< Co–O > = 2.126 Å), which are further linked by common corners, hydrogen bonds, and by properly shaped SO₄ tetrahedra (< S–O > = 1.476 Å) to sheets parallel (100). These sheets are connected to a three-dimensional framework by sharing corners with distorted LiO₄ polyhedra (< Li–O > = 1.956 Å). Apart from the isotypic sulfates of Mn²⁺ and Fe²⁺, only the molybdate LiCd(MoO₄)OH crystallises isostructural with LiCo(SO₄)OH. However, a very close structural relationship exists with the rare mineral hodgkinsonite, Zn₂Mn(SiO₄)(OH)₂, yielding crystal chemically very uncommon topological equivalents of Zn²⁺ ≡ S⁶⁺ and Si⁴⁺ ≡ Li⁺, aside from the expectable substitution Mn²⁺ ≡ Co²⁺. Polarised optical absorption spectra of LiCo(SO₄)OH reveal that the dominating spin-allowed ⁴T₁(P) band system of Co²⁺ (d⁷ configuration) is strongly split up and covers a prominent part (~ 15,500–24,500 cm⁻¹) of the visible spectral range, in accordance with the significant distortion of the Co(OH)₃O₃ polyhedron. The spectra are interpreted in terms of the Superposition Model of crystal fields, yielding a new set of intrinsic and interelectronic repulsion parameters for Co²⁺.

在低水热条件下合成化合物 LiCo(SO ₄ )OH 的晶体，并根据单晶 X 射线衍射数据确定和精炼晶体结构。LiCo(SO ₄ )OH 结晶为单斜晶系，空间群P 2 ₁ / c，Z  = 4，a  = 9.586(2)，b  = 5.425(1)，c  = 7.317(1) Å，β  = 109.65(1)° , V  = 358.3 Å ³ , wR 2 = 0.0485（2215 次独特反射，78 个变量）。该结构由共享边的链构成，具有相当强的键长和角度扭曲的 Co(OH) ₃ O_{3 个}八面体 (< Co–O > = 2.126 Å)，它们通过公共角、氢键和适当形状的 SO ₄四面体 (< S–O > = 1.476 Å) 进一步连接到平行的片 (100)。_{这些薄片通过与扭曲的 LiO 4}多面体 (< Li–O > = 1.956 Å)共享角连接到三维框架。除了 Mn ²⁺和 Fe ²⁺的同型硫酸盐，只有钼酸盐 LiCd(MoO ₄ )OH 与 LiCo(SO ₄ )OH 同构结晶。_{然而，与稀有矿物霍奇金石 Zn 2} Mn(SiO ₄ )(OH) ₂存在非常密切的结构关系，产生晶体化学上非常罕见的拓扑等效物 Zn ²⁺ ≡ S ⁶⁺和 Si ⁴⁺ ≡ Li ⁺，除了预期的取代 Mn ²⁺ ≡ Co ²⁺。_{LiCo(SO 4} )OH的偏振光学吸收光谱表明，Co ²⁺的主导自旋允许⁴ T ₁ (P) 带系统（d ⁷构型）强烈分裂并覆盖突出部分（~ 15,500–24,500 cm ⁻¹ ) 的可见光谱范围，根据 Co(OH) ₃ O _{3的显着畸变}多面体。根据晶体场的叠加模型解释光谱，产生一组新的 Co ²⁺固有和电子间排斥参数。