Molecular multifunctionality preservation upon surface deposition for a chiral single-molecule magnetElectronic supplementary information (ESI) available: Full experimental details and additional data for all the characterizations presented in the main text. Crystallographic data (including structure factors) for 1ΔΔ and 1ΛΛ have been deposited with the Cambridge Crystallographic Data Centre (CCDC 1839660-1839661, respectively). For ESI and crystallographic data in CIF or other electronic format

The synthesis and characterization of a chiral, enneanuclear Mn( iii )-based, Single-Molecule Magnet, [Mn 9 O 4 (Me-sao) 6 (L) 3 (MeO) 3 (MeOH) 3 ]Cl ( 1 ; Me-saoH 2 = methylsalicylaldoxime, HL = lipoic acid) is reported. Compound 1 crystallizes in the orthorhombic P 2 1 2 1 2 1 space group and consists of a metallic skeleton describing a defect super-tetrahedron missing one vertex. The chirality of the [Mn III 9 ] core originates from the directional bridging of the Me-sao 2− ligands via the -N-O- oximate moieties, which define a clockwise ( 1ΔΔ ) or counter-clockwise ( 1ΛΛ ) rotation in both the upper [Mn III 3 ] and lower [Mn III 6 ] subunits. Structural integrity and retention of chirality upon dissolution and upon deposition on (a) gold nanoparticles, 1@AuNPs , (b) transparent Au(111) surfaces, 1ΛΛ@ t -Au(111) ; 1ΔΔ@ t -Au(111) , and (c) epitaxial Au(111) on mica surfaces, 1@ e -Au(111) , was confirmed by CD and IR spectroscopies, mass spectrometry, TEM, XPS, XAS, and AFM. Magnetic susceptibility and magnetization measurements demonstrate the simultaneous retention of SMM behaviour and optical activity, from the solid state, via dissolution, to the surface deposited species. Simultaneous retention of SMM behaviour and of optical activity is demonstrated upon surface deposition for a chiral SMM.