Paramagnetic liquids

Oxygen condenses to a pale blue, mobile paramagnetic liquid (bp — 183.0°C at 1 atm). 

CIO2 a yellow paramagnetic gas (deep-red paramagnetic liquid and solid) discovered in 1811 by H. Davy the liquid explodes above —40° and the gas at room temperature may explode at pressures greater than 50 mmHg (6.7 kPa) despite this more than half a million tonnes are made for industrial use each year in North America alone. 

Owing to the thermal and photochemical sensitivity of the radicals (Section XXI.A) and, in some cases, the possibility of polymerization at high concentration (Section XXI.B), the data on pure samples are limited. The only magnetic data currently available for 1,3,2,4-dithiadiazolyl radicals are for 3 (R = rBu) at room temperature this compound is a brown liquid, with an effective magnetic moment of 1.5 p,B (87CC69), somewhat less than the anticipated value for a single unpaired electron of 1.73 fiB. Nevertheless, this material can be described as a paramagnetic liquid as it is virtually dissociated in the liquid state (see also Section IX.D). 

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