ISSN:
1573-1111
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Octacalcium phosphate(OCP), Ca8(HPO4)2(PO4)4·5H2O, consists of alternative stackings of layers with an apatitic structure and a brushite-like composition. Here we consider whether or not OCP is able to complex with organic substances. The interplanar spacing (d100) of OCP prepared in the presence of dicarboxylates (RC2O4 2−; R=organic group) expanded from the original value of 18.7 Å to 19.2–26.1 Å depending on the length of R. Examples of R were CnH2n(n=1–6), CH(CH3)CH2, C(CH3)=CH, CH=CH, CH2CH=CHCH2 and C6H4. Structural considerations and experimental data suggested that dicarboxylates were incorporated into the OCP structure through the replacement of HPO4 2− by RC2O4 2−.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00663248
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