Single-Crystal to Single-Crystal Transformation of Cyclic Water Heptamer to Another (H₂O)₇ Cluster Containing Cyclic Pentamer

Discrete Cuboidal 15- and 16-Membered Water Clusters in Brucine 3.86-Hydrate, Water Release and Its Consequences

“…Organic hydrates remain an important group of compounds and have been intensively studied. − Such studies are necessary especially for active materials in the pharmaceutical and advanced chemical industries, where incorporation of water molecules into a crystalline lattice can lead to drastically different physical properties of a given crystalline phase. Organic hydrates are also of interest since water molecules very often aid the formation supramolecular structures in a crystal lattice giving insight into water cluster formation, important, for example, in condensation phenomena, atmospheric chemistry, cloud and ice formation, and biochemical processes. − …”

Lanthanide(iii)-oxamato complexes containing Nd3+ and Ho3+: crystal structures, magnetic properties, and ab initio calculations

“…Similar water cycles are found in coordination compounds, such as the water heptamer even changing its hydrogen bonding network pattern when temperature-dependent single-crystal to single-crystal transformation occurs in a three-dimensional copper( ii ) coordination polymer. 40,41…”

Effects of Temperature and Anion on the Copper(II) Complexes based on 2‐(Carboxyphenyl)iminodiacetic Acid and 1,10‐Phenanthroline

“…One free water molecule (O21H21AH21B) in a tetrahedral environment is involved in the formation of four hydrogen bonds with one aryl C–H group, two water molecules and one carboxylate group, while the other one (O22H22AH22B) donates its two hydrogen atoms to one carboxylate group and one nitrate anion, respectively, and accepts one hydrogen atom from one free water molecule. As far as we know, the example either one nitrate anion forms six hydrogen bonds or one nitrate oxygen atom accepts three hydrogen atoms appears rare 10b,11…”