Structural modifications of the platinum(II) isocyanide complexes changing their solid-state luminescence

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Abstract

Cyclometallated platinum(II) complexes with the general formula [Pt(Рpy)(CNR)2]X (HРpy = 2-phenylpyridine; R = iPr, tBu, Cy; X = BF4, OTf, PF6) containing various alkylisocyanide ligands and counterions are synthesized. The compounds are studied by elemental analysis, ESI HRMS, IR spectroscopy, and 1H, 13C{1H}, and 195Pt{1H} NMR spectroscopy. The structures of [Pt(Рpy)(CNiPr)2]BF4 and [Pt(Рpy)(CNtBu)2]BF4 are determined by XRD (CIF files CCDC nos. 2325595 and 2325527, respectively). The photophysical properties in the solution and in the solid state of the synthesized compounds are studied.

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About the authors

E. V. Antonova

St. Petersburg State University

Email: m.kinzhalov@spbu.ru
Russian Federation, St. Petersburg

M. A. Sandzhieva

St. Petersburg National Research University of Information Technologies, Mechanics, and Optics

Email: m.kinzhalov@spbu.ru
Russian Federation, St. Petersburg

M. A. Kinzhalov

St. Petersburg State University

Author for correspondence.
Email: m.kinzhalov@spbu.ru
Russian Federation, St. Petersburg

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Supplementary files

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1. JATS XML
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2. Scheme 1: Synthesis of isocyanide complexes I-VIII.

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3. Fig. 1. Structures of the organometallic cation of complexes I (a) and III (b) according to PCA data.

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4. Fig. 2. Non-covalent interactions between organometallic cations in complexes I (a) and III (b).

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5. Fig. 3. Normalized luminescence spectra of powders I-VIII at 298 K.

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