Octahedral tungsten iodide clusters equipped with apical ligands (L) are synthesized to implement substantial photophysical properties. The [WI(CFCOO)] cluster reported herein is the first example of a family of ligand substituted [WIL] clusters. Such compounds are expected to exhibit a rich photochemistry in which the apical ligands play a crucial role. The versatile solid state and solution phase photophysical properties of (TBA)[WI(CFCOO)] described herein parallel characteristics obtained in some photophysically active organic compounds, including a broad absorption in the UV/VIS region. Upon irradiation of this compound, a broad red emission is observed in the VIS/NIR region resulting from excited triplet states, and singlet oxygen (aΔ) is generated in the presence of O.
The synthesis, characterization, and luminescence properties of (Bu4N)2[Mo6I8(NCS)6] are reported. Orange crystals of (Bu4N)2[Mo6I8(NCS)6] were crystallized from acetone solution and used for X‐ray single‐crystal structure determination and refinement, yielding a structure with a centrosymmetric [Mo6I8(NCS)6]2– ion. Photoluminescence studies on the crystalline solid revealed a broad excitation in the UV/Vis region and an emission around 690 nm. The red emission intensity decreases with increasing partial pressure of atmospheric molecular O2.
Molecular Oxygen Modulated Luminescence of an Octahedrohexamolybdenum Iodide Cluster Having Six Apical Thiocyanate Ligands. -The new compound (VI) is characterized by single crystal XRD and luminescence measurements. It crystallizes in the triclinic space group P1 with Z = 1. The structure contains centrosymmetric [Mo 6I8(NCS) 6] 2ions. The crystalline solid exhibits broad excitation in the UV/VIS region and an emission around 690 nm. The red emission intensity decreases with increasing partial pressure of atmospheric molecular O 2. -(RIEHL, L.; STROEBELE, M.; ENSELING, D.; JUESTEL, T.; MEYER*, H.-J.; Z. Anorg. Allg. Chem. 642 (2016) 5, 403-408, http://dx.
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