there was μ2-coordination of another TMSMAPY ligand that resembled the second μ2-bridging seen in Co2(BTMSAPY)3 where the aminopyridinate coordinated with its pyridine-nitrogen to one Co(II) ion and with the amido-nitrogen to the other. In Figure , these nitrogen atoms are labelled as N5 and N6, respectively. Intriguingly, 12 exhibited an additional μ2-bridging mode however that had not been observed by Glatz and co-workers: The last of the four TMSMAPY ligands coordinated with its pyridine-nitrogen, N4 in Figure , to one Co(II) ion, while its amido-nitrogen, N3, bridges both Co(II) central ions. Selected interatomic distances and angles for title compound 12 are provided in Table . The typical Co(II) ion -amido-nitrogen bond length was found to vary between roughly 1.98 Å and 2.00 Å. Contrasting this, the Co-N bond distances for the bridging amido-nitrogen were slightly elongated with values of 2.0677( ) Å (Co1-N3) and 2.0402( ) Å (Co2-N3). These bonds were overall notably shorter than the respective ones in [Co(TMSMAPY)2(TBUPY)2] where the bond lengths averaged out to 2.21 Å.