I have serious doubts about the exact structure of the POM in this compound. The presence of disorder in the Keggin anion is very common and results in an apparent cubic coordination geometry around the central X atom with eight O atoms around the central X atom (Cu in this case) with an occupancy factor of 0.5. This corresponds to a tetrahedron that appears disordered over two positions related by a pseudo-C4 axis or a pseudo-inversion center. This is very well known in Keggin salts with poorly polarizing cations (see, for instance: Inorg. Chem. 1984, 23, 501). This implies that the POM obtained in this compound is a Keggin one with formula CuW12O40 and a charge of -6 instead of -14. The eight H+ added to the formula are, therefore, not needed (in fact, they were artificially added to balance the anomalous large charge of the Keggin POM). Otherwise, authors should explain where these eight H+ are located since there are no crystallization water molecules that might be oxonium cations (H3O+). This disorder is even more evident when the structure is solved at high temperatures, as in this compound.
审稿人严重怀疑本化合物中POM的确切结构。Keggin阴离子中无序的存在是非常常见的，并导致中心X原子周围的表观立方配位几何结构，中心X原子（在这种情况下为Cu）周围有八个O原子，占据因子为0.5。这对应于在由伪C4轴或伪反转中心相关的两个位置上看起来无序的四面体。这在具有较差极化阳离子的Keggin盐中是众所周知的。这意味着在该化合物中获得的POM是具有式CuW12O40的Keggin POM，并且电荷为-6而不是-14。因此，不需要添加到公式中的八个H+（事实上，它们是人为添加的，以平衡Keggin POM的异常大电荷）。否则，作者应该解释这八个H+的位置，因为不存在可能是氧鎓阳离子（H3O+）的结晶水分子。当结构在高温下解析时，这种无序现象更加明显。
仔细观察原始数据和投稿的cif后发现很多问题。原始数据曝光略长，过曝的点很多。精修得到的cif里很多限制，而且还squeeze掉了溶剂。这些问题都没有提出来，主要提出的问题是Cu周围配位的原子应该是8个无序的氧原子，而不是4个。经过查询CCDC数据库发现，绝大多数多酸里，Cu配位数是4，有极个别的是8。在这里Cu-O键长约为1.8Ang左右，个人认为四配位更加合理，氧原子斥力较小；八配位的键长偏长。
