The Predicted CdPt3
(“L13”) Structure
You can now
-
3 April 2008: The explanatory material which was
previously here was not correct for the structure described
in the reference, so we have modified many of the comments.
Also, the Cartesian coordinates for
the B2 basis vector was missing
the ½ factor.
-
This is the proposed (but as yet undetected) ground state
structure of CdPt3 and the other compounds listed
below (see Curtarolo
et al.).
-
“L13” is not an official
Strukturbericht designation. It is shorthand reference for
the structure used to emphasize its relationship to the L12 (Cu3Au)
structure.
-
When a = √2 afcc, b = 2 afcc, and
c = afcc/√2 then all of the
atoms are located on the sites of a face
centered cubic lattice with cubic lattice constant
afcc. This is the structure described in the
reference.
-
When a = b this structure is equivalent to
the CuTi3 (L60)
structure.
-
When a = b = 2½ abcc and c =
abcc then all of the atoms are located on the
sites of a body centered cubic
lattice.
- Prototype: CdPt3
- Pearson Symbol: oC8
- Strukturbericht Designation: L13 (unofficial)
-
Space Group: Cmmm (Cartesian and lattice coordinate listings
available)
- Number: 65
-
Reference: Curtarolo
et al.,
Comp. Coup. Phase. Diag. Thermochem.,
29, 163 (2005).
-
Other Compounds suggested to have this Structure:
PdPt3, Pd3Pt
-
Primitive Vectors:
A1 |
= |
½ a X
- ½ b Y
|
A2 |
= |
½ a X
+ ½ b Y
|
A3 |
= |
c Z
|
-
Basis Vectors:
B1 |
= |
|
0 |
|
(Cd) |
(2a) |
B2 |
= |
½ A1
+ ½ A2
|
= |
½ a X
|
(Pt-I) |
(2b) |
B3 |
= |
½ A2
+ ½ A3
|
= |
¼ a X
+ ¼ b Y
+ ½ c X
|
(Pt-II) |
(4f) |
B3 |
= |
½ A1
+ ½ A3
|
= |
¼ a X
- ¼ b Y
+ ½ c X
|
(Pt-II) |
(4f) |
Go back to the Cubic Close
Packed Structure page.
Go back to Crystal
Lattice Structure page.