2 ) 2 ) were identified crystallographically and contain polymeric cations with six-coordinate indium centers bonded to one chelating L-L and a terminal chlorine, linked by alternating single and double chlorine bridges into chains. The complicated chemistry of InX 3 with these two rigid chelates is contrasted with that of the flexible diphosphane Et 2 P(CH 2 ) 2 PEt 2 , which forms [In 2 Cl 6 {Et 2 P(CH 2 ) 2 PEt 2 } 2 ], and with more sterically demanding o-C 6 H 4 (PPh 2 ) 2 (Sigl et al. Eur. J. Inorg. Chem. 1998, 203-210). The results also contrasted with those found for GaX 3 with the same ligands (Cheng et al. Inorg. Chem. 2007, 46, 7215-7223).
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