Tetra­kis[μ-2-(3,4-dimeth­oxy­phen­yl)acetato]-κ4 O:O′;κ3 O,O′:O;κ3 O:O,O′-bis­{[2-(3,4-dimeth­oxy­phen­yl)acetato-κ2 O,O′](1,10-phenanthroline-κ2 N,N′)samarium(III)}

In the dimeric centrosymmetric title complex, [Er2(C10H11O4)6(C12H8N2)2], the ErIII ion is nine-coordinated by five 2-(3,4-dimeth­oxy­lphen­yl)acetic acid (DMPA) ligands via seven O atoms and two N atoms from a bis-chelating 1,10-phenanthroline (phen) ligand in a distorted tricapped trigonal-prismatic geometry. The DMPA ligands are coordinated to the ErIII ion in bis-chelate, bridging and bridging tridentate modes. Relatively weak intra­molecular C—H⋯O inter­actions reinforce the stability of the mol­ecular structure. Inter­molecular C—H⋯O inter­actions are also observed.