Baikie Tom, Ng George M H, Madhavi S, Pramana Stevin S, Blake Kevin, Elcombe Margaret, White T J
School of Materials Science & Engineering, Nanyang Technological University, Singapore.
Dalton Trans. 2009 Sep 14(34):6722-6. doi: 10.1039/b906639j. Epub 2009 Jun 17.
The crystal chemistry of the cuprate apatites A(I)(4)A(II)(6)(PO(4))(6)Cu(x)O(y)(H)(z) (A = Ca, Sr and Ba) was investigated by powder X-ray (PXRD) and neutron diffraction (PND) and X-ray photoelectron spectroscopy (XPS). The refined crystal structures confirmed earlier X-ray diffraction studies that showed copper resides in the apatite channels and additionally, located hydrogen. For all materials copper is primarily divalent (Cu(2+)) but in the calcium and strontium analogues co-exists with minor Cu(3+). This is in contrast with a previous work where Cu(1+) and Cu(2+) were reported.
通过粉末X射线衍射（PXRD）、中子衍射（PND）和X射线光电子能谱（XPS）研究了铜酸盐磷灰石A(I)(4)A(II)(6)(PO(4))(6)Cu(x)O(y)(H)(z)（A = Ca、Sr和Ba）的晶体化学。精修后的晶体结构证实了早期的X射线衍射研究结果，即铜存在于磷灰石通道中，此外，还确定了氢的位置。对于所有材料，铜主要为二价（Cu(2+)），但在钙和锶类似物中，还存在少量的Cu(3+)。这与之前报道Cu(1+)和Cu(2+)的一项研究形成了对比。
