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*data for   ICSD #4242
Coll Code   4242
Rec  Date   1980/01/01
Mod  Date   1999/01/19
Chem Name   Dilanthanum Bis(carbonate) Dihydroxide
Structured  La2 (C O3)2 (O H)2
Sum         C2 H2 La2 O8
ANX         ABX4
Min Name    Ancylite (Ce)
D(calc)     4.59
Title       The crystal structure of ancylite, (RE)x (Ca, Sr)2-x (C O3)2 (O H)x
            (2-x)(H2 O)
Author(s)   dal Negro, A.;Rossi, G.;Tazzoli, V.
Reference   American Mineralogist
            (1975), 60, 280-284
Unit Cell   5.03(1) 8.52(1) 7.29(1) 90. 90. 90.
Vol         312.42
Z           2
Space Group P m c n
SG Number   62
Cryst Sys   orthorhombic
Pearson     oP28
Wyckoff     d c4
R Value     .059
Red Cell    P  5.03 7.29 8.52 89.999 89.999 90 312.417
Trans Red   1.000 0.000 0.000 / 0.000 0.000 1.000 / 0.000 -1.000 0.000
Comments    Compound with mineral name: Ancylite (Ce)
            The structure has been assigned a PDF number: 29-384
            Calculated density unusual but tolerable.
            Position of 4 Elements of H Are Undetermined.
Atom  #   OX   SITE      x           y           z           SOF      H
La   1  +3    4 c   0.25        0.3399(1)   0.6476(1)      1.         0   
C    1  +4    4 c   0.75        0.1905(14)  0.8099(18)     1.         0   
O    1  -2    4 c   0.75        0.3181(12)  0.7210(16)     1.         0   
O    2  -2    8 d   0.5297(14)  0.1218(8)   0.852(1)       1.         0   
O    3  -2    4 c   0.25        0.4135(14)  0.9749(14)     1.         H1   
Lbl  Type   Beta11      Beta22      Beta33      Beta12      Beta13      Beta23
La1  La3+ 0.0083(3)   0.0025(1)   0.0039(1)   0           0           -.0002(1)   
C1   C4+  0.0083(41)  0.0011(12)  0.0056(20)  0           0           0.0011(13)  
O1   O2-  0.0160(39)  0.0052(13)  0.0108(20)  0           0           0.0037(14)  
O2   O2-  0.0123(25)  0.0055(9)   0.0085(12)  -.0017(13)  0.0008(15)  0.0006(8)   
O3   O2-  0.0318(52)  0.0093(16)  0.0063(16)  0           0           0.0038(14)  
*end for    ICSD #4242

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jerkwin

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ÔÂÖ»À¶: ½ð±Ò+1, ¹ÄÀø½»Á÷! 2013-12-31 16:27:13
chinaworm(ÔÂÖ»À¶´ú·¢): ½ð±Ò+10, ÖµµÃÌÖÂÛ¡£ 2014-05-31 20:50:01
IIµÄcifÎļþÈçÏÂ, IµÄ2009°æ±¾²é²»µ½
data_4242-ICSD
#?2009 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of
#Commerce on behalf of the United States.  All rights reserved.
_database_code_ICSD                4242
_audit_creation_date               1980/01/01
_audit_update_record               1999/01/19
_chemical_name_systematic
;
Dilanthanum Bis(carbonate) Dihydroxide
;
_chemical_formula_structural       'La2 (C O3)2 (O H)2'
_chemical_formula_sum              'C2 H2 La2 O8'
_chemical_name_mineral             Ancylite-(Ce)
_publ_section_title
;
The crystal structure of ancylite, (RE)x (Ca, Sr)2-x (C O3)2 (O H)x
(2-x)(H2 O)
;
loop_
_citation_id
_citation_journal_abbrev
_citation_year
_citation_journal_volume
_citation_page_first
_citation_page_last
_citation_journal_id_ASTM
primary 'American Mineralogist' 1975 60 280 284 AMMIAY
_publ_author_name
;
dal Negro, A.;Rossi, G.;Tazzoli, V.
;
_cell_length_a                     5.03(1)
_cell_length_b                     8.52(1)
_cell_length_c                     7.29(1)
_cell_angle_alpha                  90.
_cell_angle_beta                   90.
_cell_angle_gamma                  90.
_cell_volume                       312.42
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P m c n'
_symmetry_Int_Tables_number        62
_refine_ls_R_factor_all            .059
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
  1        'x, -y+.5, z+.5'
  2        '-x+.5, y, z'
  3        'x+.5, y+.5, -z+.5'
  4        '-x, -y, -z'
  5        '-x, y+.5, -z+.5'
  6        'x+.5, -y, -z'
  7        '-x+.5, -y+.5, z+.5'
  8        'x, y, z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
C4+        4
H1+        1
La3+        3
O2-        -2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
La1 La3+ 4 c 0.25 0.3399(1) 0.6476(1) 1. 0
C1 C4+ 4 c 0.75 0.1905(14) 0.8099(18) 1. 0
O1 O2- 4 c 0.75 0.3181(12) 0.7210(16) 1. 0
O2 O2- 8 d 0.5297(14) 0.1218(8) 0.852(1) 1. 0
O3 O2- 4 c 0.25 0.4135(14) 0.9749(14) 1. 1
#Position of 4 Elements of H Are Undetermined.
#End of data_4242-ICSD
2Â¥2013-12-26 23:44:57
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chinaworm

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ÒýÓûØÌû:
2Â¥: Originally posted by jerkwin at 2013-12-26 23:44:57
IIµÄcifÎļþÈçÏÂ, IµÄ2009°æ±¾²é²»µ½
data_4242-ICSD
#?2009 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of
#Commerce on behalf of the United States.  All rights reserved.
_database ...

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