From the Paper "The synthesis of a magnetic susceptibility standard proved to be Hg[Co(NCS)4] through mercury analysis and magnetic measurements. Magnetic susceptibility characterization of four nickel(II) complexes, Ni(Et2en)2Cl2-2H20, Ni(Et2en)2(NCS)2, Ni(Et2en)2(NO3)2, and Ni(Et2en)2I2, is reported. Et2en is a bidentate ligand, which is bonded strongly to the Ni(II) metal center.
Ni(Et2en)2Cl2-2H2O and Ni(Et2en)2(NCS)2 were both paramagnetic with two unpaired electrons and had Ueff values of 3.17 B.M. and 3.20 B.M., respectively. Ni(Et2en)2(NO3)2 and Ni(Et2en)2I2 were both diamagnetic with no unpaired electrons and had Ueff values of 1.80 B.M. and 1.71 B.M., respectively. The color of the compounds correlates with their magnetic properties, where blue to violet compounds are paramagnetic and yellow to red complexes are diamagnetic."
Abstract Long thought of as a simple conjuring trick, an optical illusion, or something only deep meditation could bring about, levitation is now gaining validation and respect as a legitimate scientific event. Researchers in the field of levitation are now discovering that levitation is brought about by certain magnetic forces which are focused through the use of a human conduit or "antenna." This paper looks at techniques for achieving levitation and the scientific principles behind the phenomenon.