Geoscience Reference
In-Depth Information
Compound
Representative
Cell Parameter
(
˚
)
Rare Earth, Co.
No., Average
Bond Distance
˚
Tetrahedral Radical
Form
Rare Earth
Polyhedra
β
5
97.30
R[P
5
O
14
]
Nd[P
5
O
14
]
P2
1
/cZ
5
4
Nd
8
2.43
Ribbons from 8-membered
rings
Discrete polyhedra
R
5
La
Tb
a
5
8.771
b
5
9.012
c
5
13.057
β
5
89.58
R[P
5
O
14
]
Ho[P
5
O
14
]
Pcmn Z
5
4
Ho
8
2.32
Ribbons from 8-membered
Discrete polyhedra
R
5
Dy, Ho, Er, Y
a
5
8.926
b
5
12.71
c
5
8.720
R[P
5
O
14
]
Yb [P
5
O
14
]
C2/cZ
5
8
Yb
8
2.30
Layer from 20- and
8-membered rings
Discrete polyhedra
R
5
Tb
Lu, Y
a
5
12.830
b
5
12.676
c
5
12.337
β
5
91.25
Co. No.
coordination number.
5
