Kinetic and synthetic influences of water and solvent-free conditions on 1,3-dipolar cycloaddition reactions: the phthalazinium and pyridazinium dicyanomethanide 1,3-dipoles: surprisingly successful synthetic methodsElectronic supplementary information (ESI) available: sample kinetic graphs and optimised transition state structures. See http://www.rsc.org/suppdata/p2/b2/b206028k/