Reaction of La-2(OAr)(6) (1, Ar = 2,6-i-Pr2C6H3) with 2 equiv of LiOAr in THF produces the lanthanum tetrakis(aryloxide) salt (THF)La(OAr)(2)(mu-OAr)(2)Li(THF) (2). A similar reaction employing NaOAr leads to isolation of the analogous sodium salt (THF)La(OAr)(2)(mu-OAr)(2)Na(THF)(2) (3). 1 reacts with 2 equiv of cesium aryloxide in THF to yield the base-free cesium salt CsLa(OAr)(4) (4). Compounds 2, 3, and 4 have been characterized by H-1 NMR and IR spectroscopy, microanalysis, and single-crystal X-ray diffraction studies. The overall molecular geometry of 2 comprises a five-coordinate La metal center coordinated by four aryloxide ligands and one THF ligand in a somewhat distorted trigonal bipyramidal geometry and a three-coordinate Li cation which is coordinated to the oxygen atoms of two aryloxide ligands as well as a single THF ligand. La-O bond lengths average 2.208(3) and 2.384(3) Angstrom for terminal and bridging aryloxide Ligands, respectively, while the average Li-O(aryloxide) bond distance is 1.866(10) Angstrom. The molecular geometry of 3 is similar to that observed in 2, with a five-coordinate La metal center displaying a distorted trigonal bipyramidal geometry in which a THF ligand and an aryloxide ligand occupy axial positions.