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Dinuclear Cu(I) Halides with Terphenyl Phosphines: Synthesis, Photophysical Studies, and Catalytic Applications in CuAAC Reactions
被引:18
作者:
Beltran, Alvaro
[5
]
Gata, Inmaculada
[5
]
Maya, Celia
[1
,2
,3
]
Avo, Joao
[6
]
Lima, Joao Carlos
[4
]
Laia, Cesar A. T.
[4
]
Peloso, Riccardo
[1
,2
,3
]
Outis, Mani
[4
]
Nicasio, M. Carmen
[5
]
机构:
[1] CSIC, Inst Invest Quim IIQ, Dept Quim Inorgan, Seville 41092, Spain
[2] CSIC, Ctr Innovac Quim Avanzada ORFEO CINQA, Seville 41092, Spain
[3] Univ Seville, Seville 41092, Spain
[4] Univ Nova Lisboa, LAQV REQUIMTE, Dept Quim, Fac Ciencias & Tecnol, P-2829516 Monte De Caparica, Portugal
[5] Univ Seville, Dept Quim Inorgan, Seville 41071, Spain
[6] Univ Lisbon, IBB Inst Bioengn & Bioscicaces, Inst Super Tecn, P-1049001 Lisbon, Portugal
关键词:
GROUP-1B METAL(I) COMPOUNDS;
MAGNETIC-RESONANCE SPECTRA;
EXCITED-STATE DYNAMICS;
N-HETEROCYCLIC CARBENE;
LEWIS-BASE ADDUCTS;
M4X4;
CORE;
COPPER(I) COMPLEXES;
X-RAY;
CRYSTAL-STRUCTURE;
TRANSITION-METAL;
D O I:
10.1021/acs.inorgchem.0c01397
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
Several dinuclear terphenyl phosphine copper(I) halide complexes of composition [CuX(PR2Ar')](2) (X = Cl, Br, I; R = hydrocarbyl, Ar' = 2,6-diarylterphenyl radical), 1-5, have been isolated from the reaction of CuX with 1 equiv of the phosphine ligand. Most of them have been characterized by X-ray diffraction studies in the solid state, thus allowing comparative discussions of different structural parameters, namely, Cu center dot center dot center dot Cu and Cu center dot center dot center dot Aryl separations, conformations adopted by coordinated phosphines, and planarity of the Cu2X2 cores. Centrosymmetric complexes [CuI(PMe2ArXyl2)](2), 1c, and [CuI(PEt2ArMes2)](2), 3c, despite their similar structures, show very distinct photoluminescence (PL) in powder form at room temperature. The photophysical behavior of these compounds in liquid solution, solid-solid Zeonex solution and powder samples at room temperature and 77 K have been investigated and supported by DFT calculation. Identification of vibronic coupling modes, done by group theory calculations and the technique of projection operators, shows that the manifestation of these modes is conditioned by crystal packing. Complexes [CuI(PMe2ArXyl2)](2), 1c, and [CuI(PEt2ArMes2)](2), 3c, display remarkable activity in copper-catalyzed azide-alkyne cycloaddition reactions involving preformed and in situ-made azides. Reactions are performed in H2O, under aerobic conditions, with low catalyst loadings and tolerate the use of iodoalkynes as substrates.
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页码:10894 / 10906
页数:13
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