Abstract We investigated the thermal behavior of bimetallic Bi-Mo and Bi-W carbonyl complexes, [Mo(CO)5(BiPh3)] and [W(CO)5(BiPh3)] respectively, to understand the mechanism of decomposition. TGA-DTA, TGA-MS, FTIR, powder XRD and EDX were used to analyze these compounds at different temperatures. At elevated temperature (∼150 °C) loss of the M(CO)6 (M = Mo, W) group occurs first, followed by the loss of phenyl groups at ∼300 °C, resulting in the formation of yellow Bi2O3 in presence of air. Additionally, we studied the photochemical behavior of these bimetallic Bi-Mo and Bi-W carbonyl complexes. UV irradiation of these compounds caused the loss of the metal carbonyl, resulting in the formation of BiPh3.

中文翻译：

---

双金属 Bi-Mo 和 Bi-W 羰基配合物的热和光化学分析

摘要 我们分别研究了双金属 Bi-Mo 和 Bi-W 羰基配合物 [Mo(CO)5(BiPh3)] 和 [W(CO)5(BiPh3)] 的热行为，以了解分解机制。TGA-DTA、TGA-MS、FTIR、粉末 XRD 和 EDX 用于在不同温度下分析这些化合物。在升高的温度 (~150 °C) 下，首先发生 M(CO)6 (M = Mo, W) 基团的损失，然后在~300 °C 时失去苯基，导致在存在下形成黄色的 Bi2O3空气。此外，我们研究了这些双金属 Bi-Mo 和 Bi-W 羰基配合物的光化学行为。这些化合物的紫外线照射导致金属羰基的损失，导致形成 BiPh3。