Indium(III) coordination compounds

Synthesis, Structure, and Selected Properties of Aluminum-, Gallium-, and Indium-Based Metal-Organic Frameworks

“…In its complexes it is mostly found as isolated GaO 4 and GaO 6 polyhedra depending on the pH of the solution. The aqueous chemistry of In 3+ is dominated by isolated [In(H 2 O] 6 ] 3+ complexes, and condensed clusters are rarely found [34]. The solution chemistry of Al 3+ , Ga 3+ , and In 3+ in solvents other than water is not very well established, but recently a combined experimental and theoretical study on the effect of DMF as a solvent for promoting the formation of Al-MIL-101-NH 2 instead of Al-MIL-53-NH 2 has been reported [35].…”

“…This trend is also reflected in the bond distances: Comparing the structures of MIL-53 and MIL-96, which have been reported with all three metals, and averaging the metal-oxygen bond distances, M-O values of 1.881 [12,40], 1.966 [14,26], and 2.130 Å [41,42] for M = Al, Ga, and In, respectively, are observed. The substantially larger ionic radius of In 3+ compared to Al 3+ and Ga 3+ accounts also for the fact that CNs > 6 are observed in In complexes and MOFs (r(In 3+ ): CN 6 = 0.940 Å, CN 8 = 1.06 Å) [34].…”

Tris(1‐methyl‐imidazol‐2‐yl)phosphane Complexes of Pnictogen, Tetrel, and Triel Cations

“…Compounds containing Group 13 metals in the oxidation state +1 (M=Al, Ga, In) are susceptible to disproportionation to form M III and M 0 , as was observed for “GaI” in the presence of bipyridine to yield [Ga(bipy) 3 ][I] 3 and gallium metal . Tricationic complexes of indium have only been stabilized with oxygen donors, such as crown ethers and dimethyl sulfoxide, or with 1,3,5‐triaminocyclohexane, and the only tricationic complexes of gallium show elaborate EPR spectra…”

“…[1] For example, complexes of Ga + with cryptand, [2] phosphine, [3] pyrazine, [4] or arene [5] ligands, complexes of Ge 2 + with crown ethers, [6] carbenes, [7] ammonia, water, [8] pyridines, [9] phosphines, [10] or isocyanides [11] andc omplexes of As 3 + with pyridine derivatives [12] demonstrate the diversity of this emerging coordination chemistry.C ompounds containing Group13 metals in the oxidation state + 1( M= Al, Ga, In) are susceptible to disproportionation to form M III and M 0 , [13] as was observed for "GaI" [14] in the presence of bipyridine to yield [Ga(bipy) 3 ][I] 3 and gallium metal. [15] Tricationic complexes of indiumh ave only been stabilized with oxygen donors, [16] such as crown ethers [17] and dimethyl sulfoxide, [18] or with 1,3,5-triaminocyclohexane, [19] and the only tricationic complexes of gallium [20] show elaborate EPR spectra. [21] Tridentate Ld onors have promise as genericl igandsf or a wide array of metals and main-group elements.…”

Trigonal‐Bipyramidal vs. Octahedral Coordination in Indium(III) Complexes with Potentially S,N,S‐Tridentate Thiosemicarbazones

“…In order to avoid hydrolysis and afford sufficient stability in the biological medium, polydentate ligands are commonly used. Despite its importance, the coordination chemistry of indium with multidentate ligands is still a mostly unexplored field , . Frequently used chelators in radiomedicine are polyamino acids, e.g.…”