| Abstract
| - The polymeric organic−inorganic hybrid material Zn−HDTMP, {Zn[(HO3PCH2)2N(H)(CH2)6N(H)(CH2PO3H)2]·H2O}n, was synthesized and structurally characterized. Synergistic combinations of a 1:1 Zn2+/HDTMP molar ratio generate Zn−HDTMP in situ that creates anticorrosive protective films on carbon steel surfaces.
- The synthesis and structural characterization of the first polymericM−HDTMP organic−inorganic hybrids are described [M = Zn2+,Ca2+; HDTMP = hexamethylenediaminetetrakis(methylenephosphonate)]. The 3D crystal structure of the Zn2+ analogue [Zn(HDTMP)·H2O] is described. The Zn center is found in a distortedoctahedral environment of phosphonate oxygens. There is a longZn···O interaction (2.622 Å) originating from a protonated −P−OH group. Synergistic combinations of Zn2+ and the tetraphosphonate are found to form films that protect against the corrosionof carbon steels.
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