This article presents a comprehensive review of the structures of the known structurally characterized transition metal (M) pnictide (E = P, As) compounds. These compounds are being widely studied for a range of important applications including magnetic materials, magnetocaloric effects, electric conductivity, and superconductivity in addition to high catalytic activities for reactions such as hydrodesulfurization, hydrodenitrogenation, and water splitting. A number of the M_xE_y combinations are found in mineral form, including meteorites. There is tremendous diversity in this class of compounds, with examples from early to late transition metals being observed having metal to main group element ratios (M:E) ranging from 7.5:1 to 1:10. The review covers 231 M:E stoichiometries crystallizing in 289 different crystal lattices. Compounds with high phosphorus or arsenic content show interesting catenated structures ranging from simple E_n units (E = 2–4), pyramidal P(P)₃ groups, and P₆ rings to more complex branched chains, ribbons and 2-dimensional networks.

中文翻译：

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d-嵌段元素的二元过渡金属磷化物和砷化物的结构研究

本文对已知的结构特征过渡金属（M）肽（E = P，As）化合物的结构进行了全面综述。这些化合物除了对诸如加氢脱硫，加氢脱氮和水分解等反应具有高催化活性外，还被广泛研究用于一系列重要应用，包括磁性材料，磁热效应，电导率和超导性。M _x E _y的数量以矿物形式存在，包括陨石。这类化合物具有极大的多样性，从早期到晚期过渡金属的例子中，金属与主族元素的比率（M：E）为7.5：1至1:10。该综述涵盖了在289种不同晶格中结晶的231 M：E化学计量。磷或砷含量高的化合物显示出有趣的链状结构，范围从简单的E _n单位（E  = 2-4），呈锥体状P（P）₃组和P ₆环到更复杂的分支链，带和2维网络。