New Dicyano Cyclometalated Compounds Containing Pd(II)–Tl(I) Bonds as Building Blocks in 2D Extended Structures: Synthesis, Structure, and Luminescence Studies
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https://figshare.com/articles/dataset/New_Dicyano_Cyclometalated_Compounds_Containing_Pd_II_Tl_I_Bonds_as_Building_Blocks_in_2D_Extended_Structures_Synthesis_Structure_and_Luminescence_Studies/2478148
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资源简介：
New mixed metal complexes [PdTl(C∧N)(CN)2] [C∧N = 7,8-benzoquinolinate (bzq, 3); 2-phenylpyridinate (ppy, 4)] have been synthesized
by reaction of their corresponding precursors (NBu4)[Pd(C∧N)(CN)2] [C∧N = bzq (1), ppy (2)] with TlPF6. Compounds 3 and 4 were studied by X-ray diffraction, showing
the not-so-common PdII–TlI bonds. Both
crystal structures exhibit 2-D extended networks fashioned by organometallic
“PdTl(C∧N)(CN)2” units,
each one containing a donor–acceptor Pd(II)–Tl(I) bond,
which are connected through additional Tl···NC
contacts and weak Tl···π (bzq) contacts in the
case of 3. Solid state emissions are red-shifted compared
with those of the precursors and have been assigned to metal–metal′-to-ligand
charge transfer (MM′LCT [d/s σ*(Pd,Tl) → π*(C∧N)]) mixed with some intraligand (3IL[π(C∧N) → π*(C∧N)]) character.
In diluted solution either at room temperature or 77 K, the Pd–Tl
bond is no longer retained as confirmed by mass spectrometry, NMR,
and UV–vis spectroscopic techniques.
创建时间：
2016-02-20
