The structure of trans-dichlorotetrakis(pyridine)gallium(III) tetrachlorogallate(III)

Lewis Base Adducts of Heavier Group 13 Halohydrides – Not Just Aspiring Trihydrides!

“…Attempts to prepare a related gallane complex resulted in hydrometallation of the pyridine (see Section 3), again demonstrating the lower coordination preference of gallane 21. Furthermore, although the related gallium trichloride species GaCl 3 Py 2 (Py = pyridine) is ionic in composition; [GaCl 2 Py 4 ][GaCl 4 ],32 the authors noted that there was no evidence for equilibration of [GaCl 2 H(3,5‐Me 2 Py) 2 ] with an ionic counterpart; [GaH 2 (3,5‐Me 2 Py) 4 ][GaCl 4 ]. It could be reasoned that such a composition is sterically prohibited.…”

Structure of tribromotris(pyridine)indium(III) pyridine solvate

“…We have recently prepared a new complex InBra.4(CsHsN) and among the several interesting structural possibilities for this stoichiometry are the four-coordinate [In(CsHsN)4] 3+ species, the sixcoordinate [In(CsHsN)4Br2] + analogous to that found by us in the GaC13.2(CsHsN ) complex (Sinclair, Small & Worrall, 1981), and the six-coordinate InBra.3(CsHsN ) with an additional pyridine molecule of crystallization.…”

Versatile structures of group 13 metal halide complexes with 4,4′-bipy: from 1D coordination polymers to 2D and 3D metal–organic frameworks

“…16 Complexes of aluminum and gallium trihalides with a chelating bidentate donor 2,2′-bipy are ionic: [AlCl 2 (2,2′-bipy) 2 ] + Cl − •CH 3 CN, 17 [GaX 2 (2,2′-bipy) 2 ] + [GaX 4 ] − for X = Cl, Br and [GaI 2 (2,2′-bipy)]I, 18 as well as complexes with the monodentate donor pyridine in a 1 : 2 ratio [MCl 2 py 4 ] + -[MCl 4 ] − (M = Al, Ga). 19,20 More recently, molecular-ionic interplay was studied by Gandon et al 21,22 using the example of GaX 3 complexes with N-heterocyclic carbenes as monodentate ligands. It was shown that the donor strength of the carbene has a significant influence on the structure of the complex.…”