One‐Dimensional Chains Formed by First‐Row Transition Metal(II) Nitrates and Pyrimidine – Influence of Water Coordination on Structural Reliability

Abstract

AbstractAn isostructural family of one‐dimensional coordination polymers, [M(NO3)2(pym)(H2O)2]∞ [M = Mn (1), Co (2), Ni (3), Zn (4); pym = pyrimidine], has been prepared and their phase purity assessed. It is shown that in contrast to otherM(NO3)2–pyrimidine coordination polymers, 1–4 show a surprising preference for the structure reported herein rather the wide variety of other possible product architectures. It is also shown that a related complex [Ni(NO3)2(pym)(MeCN)2]∞ (5), in which water ligands observed in 1–4 are replaced by MeCN molecules, can also be prepared. However, 5 is highly hygroscopic and readily converts to 3 in the presence of atmospheric water. The implication of the uniformity of structure is discussed in relation to the serendipitous coordination of water molecules to the metal centres. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)