Gandolfi C Cotting T Martinho PN Sereda O Neels A Morgan GG Albrecht M 2011 New amphiphilic and spin-labile Mn(III) complexes based on dianionic N(4)O(2)-hexadentate sal(2)trien or sal(2)bapen ligands, which contain OC(6)H(13), OC(12)H(25), or OC(18)H(37) alkoxy substituents at different positions of the salicylidene unit were prepared (H(2)sal(2)trien = N,N'''-bis(salicylidene)-1,4,7,10-tetraazadecane, H(2)sal(2)bapen = N,N'''-bis(salicylidene)-1,5,8,12-tetraazadodecane). According to electrochemical measurements, these complexes undergo two (quasi)reversible redox processes. Temperature-dependent magnetic measurements revealed a high-spin configuration for all sal(2)trien complexes (S = 2) and gradual spin crossover for sal(2)bapen complexes from high to low spin (S = 1). The chain length strongly influences the spin crossover, as C(18)-functionalization stabilizes the low spin state at much higher temperatures than shorter alkyl chains. Moreover, long alkyl chains allow for spontaneous self-assembly of the molecules, which was investigated in single crystals and in Langmuir-films at the air-water interface. Long alkyl chains (C(12) or C(18)) as well as a mutual syn-orientation of these molecular recognition sites were required for the Langmuir monolayers to be stable. application/pdf https://sonar.ch/global/documents/138802 eng info:eu-repo/semantics/altIdentifier/doi/10.1039/c0dt01222j info:eu-repo/semantics/altIdentifier/pmid/21286645 info:eu-repo/semantics/openAccess Dalton transactions (Cambridge, England : 2003). - 2011 Synthesis and self-assembly of spin-labile and redox-active manganese(III) complexes. http://purl.org/coar/resource_type/c_6501