2019
DOI: 10.1016/j.jorganchem.2018.11.032
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Copper(I) complexes of N-alkyl-substituted N-Heterocyclic carbenes

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Cited by 25 publications
(21 citation statements)
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“…The distances between the carbenic carbon atoms and the copper atom in 5c are slightly shorter than those in 5a and 5d.T he CÀCu distances in 5a are similart ot hose of [(Dipp 2 Im) 2 Cu][X] (X = PF 6 :1 .938(5) ; [58] BF 4 :1 .939(18) ; [58] BPh 4 :1 .872(4) ; [62a] Bneop 2 :1.9204( 14) ; [62b] Bpin 2 :1.920(4) ; [62c] (1.898(6)-1.908 (7) ). [63] The C2ÀCu distances in 5c (1.898(2) ) and 5d (1.9136( 14) )a re slightly longer than d(CÀCu) in the related chloride complexes [(Me 2 Im Me )CuCl] (1.878(2) ) [65] and [(cAAC Me )CuCl] (1.878(2) ). [66] The corresponding cationic copperi ons were detected in the high resolution mass spectra of 5a-e (5a: m/z 839.50; 5b: m/z 631.38; 5c: m/z 575.31; 5d: m/z 736.46; 5e: m/z 729.30).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The distances between the carbenic carbon atoms and the copper atom in 5c are slightly shorter than those in 5a and 5d.T he CÀCu distances in 5a are similart ot hose of [(Dipp 2 Im) 2 Cu][X] (X = PF 6 :1 .938(5) ; [58] BF 4 :1 .939(18) ; [58] BPh 4 :1 .872(4) ; [62a] Bneop 2 :1.9204( 14) ; [62b] Bpin 2 :1.920(4) ; [62c] (1.898(6)-1.908 (7) ). [63] The C2ÀCu distances in 5c (1.898(2) ) and 5d (1.9136( 14) )a re slightly longer than d(CÀCu) in the related chloride complexes [(Me 2 Im Me )CuCl] (1.878(2) ) [65] and [(cAAC Me )CuCl] (1.878(2) ). [66] The corresponding cationic copperi ons were detected in the high resolution mass spectra of 5a-e (5a: m/z 839.50; 5b: m/z 631.38; 5c: m/z 575.31; 5d: m/z 736.46; 5e: m/z 729.30).…”
Section: Resultsmentioning
confidence: 99%
“…(1.898(6)-1.908(7) ). [63] The C2ÀCu distances in 5c (1.898(2) ) and 5d (1.9136(14) )a re slightly longer than d(CÀCu) in the related chloride complexes [(Me 2 Im Me )CuCl] (1.878(2) ) [65] and [(cAAC Me )CuCl] (1.878(2) ). [66] The corresponding cationic copperi ons were detected in the high resolution mass spectra of 5a-e (5a: m/z 839.50; 5b: m/z 631.38; 5c: m/z 575.31; 5d: m/z 736.46; 5e: m/z 729.30).…”
Section: Nickel Complexesmentioning
confidence: 99%
“…This outcome may be related to the inherent instability of the respective free carbenes, when containing small alkyl N-substituents, [25][26][27] though accessibility of these free carbenes has been demonstrated. [28][29][30][31] Complex formation was also unsuccessful when applying a one pot synthesis using equimolar quantities of imidazolium salt and Cu(OAc)2 in the presence of tBuOK (1.2 molequiv.) under inert conditions (dry THF, N2 atmosphere).…”
Section: Resultsmentioning
confidence: 99%
“…There are only a few examples of similar coordination of copper(I) with NHCs in the literature. 35,36 The Cu center adopts a distorted trigonal geometry in 5, where Cu and I atoms are located at the crystallographic axis of rotation (Figure 5). The silylene moieties are twisted out of the plane, which makes the structure look like a propeller.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…5 is a structurally unique complex due to the coordination of two molecules of 1 to the one copper­(I) center. There are only a few examples of similar coordination of copper­(I) with NHCs in the literature. , …”
Section: Resultsmentioning
confidence: 99%