The First Compound Containing a Metal Center in a Homoleptic Environment of XeF₂ Molecules

Homoleptic [M(XeF2)6]2+ cations of copper(II) and zinc(II)—Syntheses and crystal structures of [M(XeF2)6](SbF6)2 (M=Cu, Zn)

“…Till now, Ca 2 (XeF 2 ) 9 (AsF 6 ) 4 was the only representative of a compound with a metal centre in a homoleptic environment of XeF 2 [5]. However, its crystal structure was of layered type.…”

“…Depending upon the strength of Lewis acidity on the metal centre, character of metal-fluorine bonds, Lewis basicity of the anions, etc., compounds crystallize as molecular structures [1], dimer structures [1], chain structures [2][3][4], double-chains structures [1], layer structures [1,5], strongly interconnected double layers [1,6] or three-dimensional networks [1].…”

Synthesis of novel salts with HF, AsF3 and XeF2 as ligands to metal cations

“…The most interesting compounds in this series of the coordination compounds are compounds with homoleptic centers. The first such compound isolated and structurally characterized was [Ca 2 (XeF 2 ) 9 ](AsF 6 ) 4 [37], which has only one from its two crystallographically different Ca atoms homoleptically coordinated by XeF 2 molecules. Recently two new compounds [Cu(XeF 2 ) 6 ](SbF 6 ) 2 and [Zn(XeF 2 ) 6 ](SbF 6 ) 2 [41] (Fig.…”

New class of coordination compounds with noble gas fluorides as ligands to metal ions

“…The number of XeF 2 molecules (bridging and nonbridging) around one metal center could range from one nonbridging XeF 2 molecule in [Cd(XeF 2 )](BF 4 ) 2 [12] to up to nine XeF 2 molecules (five nonbridging and four bridging) around one Ca atom in [Ca 2 (XeF 2 ) 9 ](AsF 6 ) 4 while the other Ca atom in this compound is coordinated by four bridging XeF 2 molecules and four AsF 6 units [15]. The coordination sphere of metal centers could be composed only of XeF 2 molecules (one homoleptic Ca atom in [Ca 2 (XeF 2 ) 9 ](AsF 6 ) 4 or XeF 2 molecules and AF 6 À anions).…”

“…All details regarding crystal structure determinations are given elsewhere [5][6][7][9][10][11][12][13]15,16,18].…”