Antiferromagnetism in a family of S = 1 square lattice coordination polymers NiX2(pyz)2 (X = Cl, Br, I, NCS; pyz = pyrazine) by Liu, J, Goddard, PA, Singleton, J, Brambleby, J, Foronda, F, Möller, J, Kohama, Y, Ghannadzadeh, S, Ardavan, A, Blundell, S, Lancaster, T, Xiao, F, Williams, R, Pratt, F, Baker, P, Wierschem, K, Lapidus, S, Stone, K, Stephens, P, Bendix, J, Woods, T, Carreiro, K, Tran, H, Villa, C, Manson, J