Crystal growth and characterization of zinc–(amino-tris-(methylenephosphonate)) organic–inorganic hybrid networks and their inhibiting effect on metallic corrosion

Syntheses, structures, thermal stabilities and luminescence of two new 3D zinc phosphonates

“…It is worth to mention that the nitrogen atom is not protonated and takes part in coordination. This is different from those in the reported compounds [40][41][42][43][44][45][46][47]. In addition, there are four hydrogen bondings in this structure: (1) the protonated 1,4-butanediamine provides three hydrogen atoms to form hydrogen bondings with adjacent phosphonate groups (N2 Á Á Á O5, 2.816(6)Å; N3 Á Á Á O3, 2.816(6)Å; N3 Á Á Á O8d, 2.892(7)Å); (2) the protonated phosphonate oxygen atom (O7) interacts with the neighboring phosphonate oxygen atom (O2e) through a strong hydrogen bonding (O7 Á Á Á O2e, 2.460(6)Å).…”

Corrosion Inhibitors in Cooling Water Systems

“…Phosphonates are able to form polymolecular layers on the metal surface [17,18]. The first layer is usually strongly bonded with the metal surface, and its structure and properties are due to the interaction of phosphonate with the metal.…”

Chemistry of organophosphonate scale growth inhibitors: two-dimensional, layered polymeric networks in the structure of tetrasodium 2-hydroxyethyl-amino-bis(methylenephosphonate)

“…However, this cannot be ignored as O33 is localized in the approximate apical position above the Na1 tetragonal basal plane (+O33-Na1-O13=72. 30(3)1, +O33-Na1-O40= 88.41(3)1). Na1 could be considered as a ''nozzle'' linking in a axis direction diagonally propagating zigzag chains (-Na3-Na5-Na4-Na2-N4-Na5-Na3-) into 2D polymeric sheets which are parallel to ac faces.…”

“…In these architectures hydrogen bonds are predominant resulting in one-, two-, and three-dimensional supramolecular networks. We are currently interested in metal-phosphonate chemistry as this relates to chemical water treatment [4b], oilfield [29], and corrosion control applications [30]. The present study presents structural chemistry of HEAMBP.…”