Use of a rhenium cyanide nanomagnet as a building block for new clusters and extended networksElectronic supplementary information (ESI) available: Fig. S1-S4, magnetization data and Fig. S5-S6 additional AC susceptibility studies. CCDC reference numbers 764601-764604 . For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b927242a

Derivatives of the single molecule magnet (SMM) {[Re(triphos)(CN) 3 ] 4 [MnCl] 4 } (Re 4 Mn 4 ) {[Re(triphos)(CN) 3 ] 4 [Mn(CH 3 CN)] 4 }(ClO 4 ) 4 ( 2 ) and {[Re(triphos)(CN) 3 ] 4 [Mn(ClO 4 )] 3 [Mn(CH 3 OH)(CH 3 O)]} ( 3 ), were prepared by reacting [Et 4 N][Re(triphos)(CN) 3 ] ( 1 ) with Mn(ClO 4 ) 2 ·6H 2 O. Reaction of sodium dicyanamide, NaN(CN) 2 , with compound 2 in CH 2 Cl 2 results in the product {[Re(triphos)(CN) 3 ] 4 [Mn(N(CN) 2 )] 4 } ( 4 ), in which each Mn( ii ) site is terminated by a dicyanamide ligand. A similar reaction of compound 3 in CH 2 Cl 2 -MeOH solution with LiTCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) leads to the formation of {[Re(triphos)(CN) 3 ] 4 [Mn(TCNQ-TCNQ) 3 (Mn(HTCNQ)(CH 3 O))]} ( 5 ) whose structure is best described as a chain of dimers of Re 4 Mn 4 cubes bridged by σ-bonded (TCNQ 2 ) 2− linkers with one capping HTCNQ ligand. Derivatives of the SMM {[Re(triphos)(CN) 3 ] 4 [MnCl] 4 } are reported as well as the formation of {[Re(triphos)(CN) 3 ] 4 [Mn(TCNQ-TCNQ) 3 (Mn(HTCNQ)-(CH 3 O))]} whose structure is best described as a chain of dimers of Re 4 Mn 4 cubes bridged by σ-bonded (TCNQ 2 ) 2− .