Two vanadium(iii) complexes, CztBu(PyriPr)2VCl2 (1) and CztBu(PyriPr)2V(N3)2 (2), were synthesized and characterized. Chemical reduction of both 1 and 2 gives the thermally stable nitrido-bridged vanadium(iv) dimer complex, [{CztBu(PyriPr)2}V]2(μ-N)2 (3), which is a rare example of a dimeric vanadium(iv) complex bridged by two nitrido ligands. The nitride ligands of 3 are unreactive due to the well-protected environment provided by the pincer ligand and its substituents, as is supported by its X-ray crystal structure and further described by DFT calculations.

中文翻译：

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氮桥联二聚钒（iv）配合物的合成，表征，DFT计算和反应性研究。

合成并表征了两种钒（iii）配合物CztBu（PyriPr）2VCl2（1）和CztBu（PyriPr）2V（N3）2（2）。对1和2进行化学还原可得到热稳定的亚硝基桥接钒（iv）二聚体复合物[{CztBu（PyriPr）2} V] 2（μ-N）2（3），这是二聚体的罕见例子钒（iv）络合物，由两个亚硝基配体桥接。3的氮化物配体由于由钳形配体及其取代基提供的良好保护环境而无法反应，正如其X射线晶体结构所支持并由DFT计算进一步描述的那样。