Unprecedented stabilisation of the Ag₂²⁺-ion by two hydrido-iridium(iii) complexes

Abstract

The complex [[(eta 5-C5Me5)(Ph3P)Ir(mu-H)2]2Ag2(OSO2CF3)2], containing the Ag2(2+)-ion, has been synthesized; crystallographic and spectroscopic data are described.

Shedding Light on the Photochemistry of Coinage-Metal Phosphorescent Materials: A Time-Resolved Laue Diffraction Study of an AgI–CuI Tetranuclear Complex

“…5,9–17,19–41 A number of examples of short argentophilic contacts down to 2.637(1) Å, found in [Et 4 N] 2 [(Ag-(Sn 2 B 11 H 11 )bipy) 2 ], 41 have been reported. 19,21,42–44 In particular, heterometallic complexes 9,12,27,29,32,45–49 have recently attracted interest because of their efficient luminescence.…”

Synthesis, Characterization, and Reactivity of the Group 11 Hydrido Clusters [Ag6H4(dppm)4(OAc)2] and [Cu3H(dppm)3(OAc)2]

“…Consequently, Ag I -H complexes have proven to be relatively rare. 21,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Moreover, the examples isolated thus far are either homometallic monohydrides, e.g., [ 10 ] 2+ ). 39 Herein, we report the synthesis and characterization of the first structurally characterized homometallic silver polyhydrido cluster, [Ag 6 H 4 (dppm) 4 (OAc) 2 ].…”

Heterometallic AgI–IrIII Hydride Coordination Polymers Bridged by IrIII Metalloligands

“…This fact shows that complex 1 can serve as a useful Ir III metalloligand. Regarding heterometallic Ag–Ir complexes with direct Ag I –Ir I or Ag I –Ir III bonds (contacts), only a few dinuclear Ag I –Ir III complexes,91 trinuclear Ag I –Ir III –Ag I ,92 Ir III –Ag I –Ir III complexes,93,94 and tetranuclear Ir III –Ag I 2 –Ir III complexes95 with Ag I –Ir III bonds and containing terminal or μ 2 ‐bridging hydrides have been structurally characterized, along with some dinuclear Ag I –Ir I complexes,96,97 trinuclear Ir I –Ag I –Ir I complexes,98–100 and polymeric Ag I –Ir I –Ag I complexes101,102 with an Ir I →Ag I donor–acceptor bond (interaction). Recently, carbonyl clusters103 with {Ir 4 Ag}, {Ir 8 Ag}, and {Ir 8 Ag 2 } cores with Ir–Ag and Ir–Ir bonds and a Ir 4 Ag 4 cluster104 with an Ir II –Ag I interaction have been reported.…”

“…The Ag(1)–N(3) and Ag(1)–O(1) distances are 2.253(5) and 2.264(6) Å, respectively. The Ag(1)–Ir(1) distance of 2.8589(5) Å is longer than the sum of the empirical covalent radii of Ir and Ag (2.61 Å),105 and the distance is at the high end of the ranges for Ag I –Ir III hydride complexes with Ag I –Ir III bonds [2.709(1)–2.917(11) Å]91–95 and for those in Ag I –Ir I complexes with Ag I –Ir I bonds [2.631(5)–2.9078(5) Å] 96–102. Thus, the Ag I –Ir III bond in coordination polymer 6 is considered to be relatively weak.…”