For structure analysis, single crystals of the products, which are known to be highly reactive in air, were rapidly stuck on top of a glass filament using perfluorinated oil and mounted in an X-ray diffractometer (Stoe IPDS II, equipped with a graphite monochromator, a Mo KR radiation source, and an Oxford Cryostream LT at 200 K) to avoid any oxidation or exposure to moisture. The determination of the unit cell and the solution and refinement of the crystal structure were performed using the SHELXL97 software