Binuclear copper(I) complexes containing bis(diphenylphosphino)methane bridging ligands: crystal structure of [Cu₂(µ-dppm)₂(MeCN)₄][ClO₄]₂

3[(d, dxy)(pz)] Excited States of Binuclear Copper(I) Phosphine Complexes: Effect of Copper–Ligand and Copper–Copper Interactions on Excited State Properties and Photocatalytic Reductions of the 4,4′‐Dimethyl‐2,2′‐bipyridinium Ion in Alcohols.

“…Even at a very high CH 3 species contains a Cu ¥¥¥ Cu separation of 3.757(3) ä. [22] Therefore, the 480 nm emission for CH 3 Photochemical reactions and photocatalysis: Previously, [24] we showed that [Cu 2 (dppm) 2 (CH 3 CN) 4 ] 2 can catalyze the lightinduced carbon ± carbon coupling reactions of alkyl halides. Here, we have found that the triplet excited states of binuclear copper(i) complexes with dcpm, dppm, and dmpm ligands are powerful reductants.…”

Reactivity of Dinuclear Copper(I)/pybox Complexes towards Isocyanides and Phosphanes

“…The Cu-P distance is 2.2776 Å on average, which is comparable to those observed in other dinuclear copper(I) complexes containing μ-dppm ligands. [11] The structure of complex 13 shows a mononuclear cation [Cu{(S,S)-iPr-pybox}(dppf)] + and an uncoordinated PF 6 -anion. The Cu(1) atom is bonded to both phosphorus atoms of the dppf ligand and to the oxazoline and the pyridine nitrogen atoms of the pybox ligand in a highly distorted tetrahedral arrangement.…”

“…The two former ligands present a similar small bite angle and are frequently used as bridging ligands to stabilized dimetallic complexes, [10][11][12] while the latter ligand usually exhibits a chelating ability, although its bridging behavior in dinuclear complexes is also well documented. [13] The reaction of complex 1 with dppm (1:2 molar ratio) in dichloromethane at room temperature led to complex [Cu 2 {(S,S)-iPr-pybox}(μ-dppm) 2 ][PF 6 ] 2 (10) in 67 % yield (Scheme 3).…”

{[Cu2(μ-Cl)(μ-dppm)2](μ2-TCNQ)}∞, a charge transfer compound derived from a donor with a copper dimer

“…3). Distances and angles within the dicopper unit are within the usual observed ranges for derivatives of [Cu 2 (dppm) 2 (CH 3 CN) 4 ](ClO 4 ) 2 [13]. Of special note is that two copper atoms are triply bridged by two dppm ligands and chloride to form dimer, the CuÁ Á ÁCu separation of 3.217 Å is shorter than that found in complex [Cu 2 (dppm) 2 (CH 3 CN) 4 ](ClO 4 ) 2 .…”

“…1 is more difficult to reduce than the free TCNQ molecule. It is also (14); Cu(1)-P(1), 2.2565 (14); Cu(1)-Cl(1), 2.3713 (15); Cu(2)-N(3)#1, 2.111 (5); Cu(2)-P(2), 2.2564 (14); Cu(2)-P(4), 2.2587 (14); Cu(2)-Cl(1), 2.3689 (13); N(1)-C(8), 1.154(6); N(2)-C(9), 1.163 (7); N(3)-C(11), 1.139 (7); N(3)-Cu(2)#2, 2.111 (5); N(4)-C(12), 1.129 (7); C(1)-C(2), 1.408(8); C(1)-C(6), 1.413 (7); C(1)-C (7), 1.428 (7); C(7)-C(9), 1.381(8); C(7)-C(8), 1.421 (7); N(1)-Cu (1) noteworthy that the first reduction peaks of TCNQ for compound 1 disappeared, which indicates that TCNQ is in the reduction state (TCNQ ÅÀ ) [8b,18], and is in agreement with the result of the sample used for X-ray analysis. At room temperature, compound 1 exhibits luminescence.…”