TY - RPRT TI - Anions derived from squaric acid form interionic pi-stack and layered, hydrogen-bonded superstructures with organometallic sandwich cations: the magnetic behaviour of crystalline AU - D Braga AU - L Maini AU - L Prodi AU - A Caneschi AU - R Sessoli AU - F Grepioni PY - 2000 DO - 10.1002/(sici)1521-3765(20000417)6:8<1310::aid-chem1310>3.0.co;2-t UR - https://pubmed.ncbi.nlm.nih.gov/10840952/ ID - 10840952 ER -