Similar to COFs, and even sometimes better, MOFs also offer extended 2D π-conjugation. For example, a recent paper by Yang et al. reports on a semiconducting MOF magnet. K3Fe2[PcFe-O8] (Pc -phthalocyanine) exhibits spontaneous magnetization and full in-plane πd conjugation, which results in room temperature carrier mobility of about 15 cm 2 V -1 s -1 . The long-range magnetism arises from the magnetic coupling between iron centers via the πelectron system. This MOF exhibits strong out-of-plane band dispersion, however, different to many COFs and MOFs, it also shows in-plane dispersion. The K3Fe2[PcFe-O8] MOF consists of layers being only one atom thick (see Figure ). Such atomically-thin planar MOFs, with extended in-plane π-conjugation, are currently found to be the most conductive frameworks known up to date. For example, in the case of Ni3HITP2 (HITP -2,3,6,7,10,11hexaiminotriphenylene; see Figure ), the highly π-stacked and extended conjugation of the network results in high electrical conductivity. This semiconducting MOF was initially investigated by Dinca and co-workers and later by Zeng and co-workers. It has an interlayer distance of about 3.3 Å and a conductivity of 40 S cm -1 at room temperature. In another MOF-like coordination polymer based on benzenehexadelenolate, ([Cu3(C6Se6)]n), with the π-d conjugation extended in-plane, the layers are again stacked in the AA'AA' fashion and have Cu metal centers in a square planar configuration (see Figure ). The interlayer distance is about 3.6 Å, very close to that in graphite. The material exhibits metallic character, similar to many other atomically-thin MOFs, and very high room-temperature conductivity of 110 S cm -1 .