Synthesis, crystal structures, and electronic spectra of (1,8-naphthyridine)ReI(CO)3Cl and [(1,8-naphthyridine)CuI(DPEPhos)]PF6

A luminescent rhenium(I) complex of 2,7-dimethyl-1,8-naphthyridine: synthesis, spectroscopy and X-ray crystal structure

“…9 ns), and found to be at the shorter end of the emission lifetime range expected for a neutral chlorosubstituted rhenium complex of this generic type [33][34][35]. These results contrast with those observed for fac{ReCl(CO) 3 (napy)} where non-emissivity in solution at room temperature was attributed to fluxionality of the ligand and correspondingly efficient non-radiative vibrational deactivation of the excited state [23]. Similarly, for fac-{ReCl(CO) 3 (L 1 )} we attribute the presence of ligandcentred emission and the very short 3 MLCT lifetime to solution state fluxionality of the ligand at rhenium.…”

“…The average Re-N distances are comparable to those obtained for the analogous napy complex of rhenium (cf. average Re-N distance 2.23 Å ) [23]. Overall, the coordination geometry is clearly distorted octahedral, with the average N-Re-N bite angle at approximately 59.6°.…”

“…We are currently interested in the use of the napy moiety within metal-based luminescent arrays. The closely related complex fac-{ReCl(CO) 3 (napy)} was recently published although the authors reported that the complex was nonemissive in solution at room temperature [23]. Therefore, as part of our ongoing investigations into the applications of various rhenium-based luminophores [24][25][26][27][28] we herein report our preliminary investigations into the coordination chemistry and photophysical properties of a Re I complex incorporating a 2,7-substituted naphthyridine ligand.…”

Two Four‐Coordinate and Seven‐Coordinate CoII Complexes Based on the Bidentate Ligand 1, 8‐Naphthyridine Showing Slow Magnetic Relaxation Behavior

“…Compared to the coordination modes of the common bidentate Na tom ligands2 ,2'-bipyridine (bpy) and 1,10-phenanthroline( phen), napy can be functioned as three coordination modes including (i)monodentate;( ii)bidentate and (iii)dinuclear bridging mode ( Figure 1). [22] With respectt om etal centers, as eries of complexes based on napy with distinct crystal structures (s ee the reported structures summarized from the Cambridge Structural Database Version 5.40 updated to May,2019 in Ta ble S1) have been reported with 3d metal centers including V IV , [23] Mn I , [24] Fe II , [25] Cu I/II , [26] and Ni II , [27] with 4d and 5d metal centers including Mo II , [28] Ru II , [29] Rh II , [30] Pd I/II , [31] Ag I , [32] Cd II , [33] Re I , [34] Os VIII , [35] Ir III , [36] Pt II , [37] Au I [38] and Hg I/II , [25,39] anda lso with 4f metal centers Eu III [40] and Pr III . [41] Witht he coordination numbers ranging from 2t o1 2, napy can act as al igand with diverseC Ns to obtain the low-and high-coordinate 3d metal complexes.A lthough a series of cobalt(II) complexes based on the derivatives of napy have been reported, [42] the crystal structures of the cobalt(II) complexes only based on napy have never been determined till now.I th as long been said that the cobalt complex ([Co(napy) 4 ](ClO 4 ) 2 )w as deemed to be an eight-coordinate compound but without any structuralp roof.…”

Mono- and di-nuclear 2,3-diazabutadiene and 2-azabutadiene complexes of Rhenium(I): Syntheses, luminescence spectra and X-ray structures

“…In particular, the rich photophysics of Re(I) compounds have been the subject of many articles [5][6][7][8][9][10][11][12]. In continuation in our work on the organic and coordination chemistry of 2-azabutadiene compounds [13], we have recently exploited the reactivity of the vinyl-chlorine bonds of [Cl 2 C@C(H)-N@CPh 2 ] (1a) for oxidative addition reactions across low-valent metal centers to synthesize r-alkenyl complexes trans-[MCl{(C(Cl)@C(H)-N@CPh 2 )}(PPh 3 ) 2 ] (M = Pd, Pt) possessing a p-conjugated organic array [13c].…”