Challenges still remain in producing room-temperature ferromagnetism/ferrimagnetism in inorganic–organic hybrid compounds. Here, we report the Fe vacancy-doped inorganic–organic (Fe_xSe₂)₂Fe(dien)₂ (dien = diethylenetriamine, x = 0.86) hybrid cuboids by self-assemble of finite one-dimensional (1D) FeSe₂ chains and Fe(dien)₂ complexes. A growth model is proposed by kinetically controllable syntheses of novel Fe_2x+1Se₄(dien)₂ hybrids. The Rietveld refinement reveals that Fe vacancies in the Fe_2.71Se₄(dien)₂ hybrid cuboids induce large distortions of the FeSe₂ chains and the room-temperature lattice parameters are a = 9.225(4) Å, b = 18.021(8) Å and c = 11.609(6) Å. Magnetic measurements and electron spin resonance spectra of the Fe_2.71Se₄(dien)₂ hybrid cuboids show the ferrimagnetism with the Curie temperature (T_C) of 600 K and the spin glass state with the freezing temperature (T_f) of 108 K. Impressive room-temperature ferrimagnetic properties of the Fe_2.71Se₄(dien)₂ hybrid cuboids were ascribed to the high concentration of Fe³⁺ vacancies (0.29 per cell) in the hybrid cuboids, which is supported by the ⁵⁷Fe Mössbauer spectrum fitting based on the ferrimagnetic model.

在无机-有机杂化化合物中产生室温铁磁性/亚铁磁性仍然存在挑战。在这里，我们通过有限一维 (1D) FeSe ₂链的自组装报告了 Fe 空位掺杂的无机 - 有机 (Fe _x Se ₂ ) ₂ Fe(dien) ₂ (dien = 二亚乙基三胺，x = 0.86) 杂化长方体和 Fe(dien) ₂配合物。通过新型Fe _2x+1 Se ₄ (dien) ₂杂化物的动力学可控合成提出了生长模型。Rietveld 精修表明 Fe _2.71 Se ₄ (dien) ₂中的 Fe 空位混合长方体引起 FeSe ₂链的大变形，室温晶格参数为 a = 9.225(4) Å、b = 18.021(8) Å 和 c = 11.609(6) Å。Fe _2.71 Se ₄ (dien) ₂杂化长方体的磁性测量和电子自旋共振谱显示居里温度 (T _C ) 为 600 K的亚铁磁性和凝固温度 (T _f ) 为 108 K的自旋玻璃态。 Fe _2.71 Se ₄ (dien) ₂杂化长方体令人印象深刻的室温亚铁磁特性归因于高浓度的 Fe ³⁺混合立方体中的空位（每个单元 0.29），这得到了基于亚铁磁模型的⁵⁷ Fe Mössbauer 谱拟合的支持。