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From Cluster to Polymer: Ligand Cone Angle Controlled Syntheses and Structures of Copper(I) Alkynyl Complexes
Author(s) -
Chang XiaoYong,
Low KamHung,
Wang JuanYu,
Huang JieSheng,
Che ChiMing
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201604762
Subject(s) - homoleptic , phosphorescence , chemistry , acetonitrile , copper , rhenium , luminescence , cluster (spacecraft) , ligand (biochemistry) , crystallography , crystal structure , polymer , photochemistry , polymer chemistry , inorganic chemistry , materials science , metal , organic chemistry , fluorescence , biochemistry , physics , receptor , optoelectronics , quantum mechanics , computer science , programming language
Copper(I) alkynyl complexes have attracted tremendous attention in structural studies, as luminescent materials, and in catalysis, and homoleptic complexes have been reported to form polymers or large clusters. Herein, six unprecedented structures of Cu I alkynyl complexes and a procedure to measure the cone angles of alkynyl ligands based on the crystal structures of these complexes are reported. An increase of the alkynyl cone angle in the complexes leads to a modulation of the structures from polymeric [((PhC≡CC≡C)Cu) 2 (NH 3 )] ∞ , to a large cluster [(TripC≡CC≡C)Cu] 20 (MeCN) 4 , to a relatively small cluster [(TripC≡C)Cu] 8 (Trip=2,4,6‐ i Pr 3 ‐C 6 H 2 ). The complexes exhibit yellow‐to‐red phosphorescence at ambient temperature in the solid state and the luminescence behavior of the Cu 20 cluster is sensitive to acetonitrile.