data_1
_chemical_formula_sum 'C4 H12 Ca1 O10'
_chemical_formula_moiety
;
C4 H4 O6 2-,Ca1 2+,4(H2 O1)
;
_journal_volume 38
_journal_year 1982
_journal_page_first 2461
_journal_name_full 'Acta Crystallogr.,Sect.B:Struct.Crystallogr.Cryst.Chem. '
loop_
_publ_author_name
"F.C.Hawthorne"
"I.Borys"
"R.B.Ferguson"
_chemical_name_systematic
;
Calcium tartrate tetrahydrate
;
_cell_volume    938.350
_exptl_crystal_density_diffrn 1.84
_diffrn_special_details
;
The study was carried out at room temperature,in the range 283-303K

;
_symmetry_cell_setting orthorhombic
_symmetry_space_group_name_H-M 'P 21 21 21'
_symmetry_Int_Tables_number 19
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 x,y,z
2 1/2+x,1/2-y,-z
3 -x,1/2+y,1/2-z
4 1/2-x,-y,1/2+z
_cell_length_a 9.631(2)
_cell_length_b 10.573(3)
_cell_length_c 9.215(2)
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_formula_units_Z 4
loop_
_atom_type_symbol
_atom_type_radius_bond
C 0.68
H 0.23
Ca 0.99
O 0.68
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ca1 Ca 0.31773 0.67721 0.18649
C1 C 0.64950 0.70270 0.10850
C2 C 0.65960 0.72730 0.27160
C3 C 0.72190 0.85840 0.29710
C4 C 0.73850 0.89280 0.45770
O1 O 0.53160 0.67300 0.05780
O2 O 0.75840 0.71540 0.03770
O3 O 0.52630 0.71570 0.33690
O4 O 0.64160 0.95450 0.22680
O5 O 0.76280 0.80860 0.54810
O6 O 0.73190 1.01030 0.48500
O7 O 0.83600 0.59010 0.77350
O8 O 0.43450 0.33040 0.69330
O9 O 0.58550 0.42700 0.92540
O10 O 0.42420 0.06350 0.92990
H1 H 0.80000 0.56900 0.86400
H2 H 0.94800 0.57400 0.76900
H3 H 0.47300 0.34300 0.76700
H4 H 0.48600 0.27200 0.64000
H5 H 0.55200 0.50000 0.96500
H6 H 0.59300 0.37800 0.99000
H7 H 0.44900 -0.00400 0.89500
H8 H 0.35900 0.09400 0.87000
H9 H 0.72600 0.67600 0.31700
H10 H 0.82800 0.85600 0.25400
H11 H 0.53400 0.68300 0.40000
H12 H 0.68000 0.97000 0.15000

data_2
_chemical_formula_sum 'C4 H12 Ca1 O10'
_chemical_formula_moiety
;
C4 H4 O6 2-,Ca1 2+,4(H2 O1)
;
_journal_volume 205
_journal_year 1993
_journal_page_first 348
_journal_name_full 'Z.Kristallogr. '
loop_
_publ_author_name
"R.Boese"
"O.Heinemann"
_chemical_name_systematic
;
Calcium tartrate tetrahydrate
;
_cell_volume    921.878
_symmetry_cell_setting orthorhombic
_symmetry_space_group_name_H-M 'P 21 21 21'
_symmetry_Int_Tables_number 19
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 x,y,z
2 1/2+x,1/2-y,-z
3 -x,1/2+y,1/2-z
4 1/2-x,-y,1/2+z
_cell_length_a 9.170(2)
_cell_length_b 9.559(2)
_cell_length_c 10.517(2)
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_formula_units_Z 4
loop_
_atom_type_symbol
_atom_type_radius_bond
C 0.68
H 0.23
Ca 0.99
O 0.68
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ca1 Ca -0.18647(4) 0.31703(4) 0.32354
C1 C 0.45910(21) 0.23679(20) 0.39120(19)
C2 C 0.29797(23) 0.22073(20) 0.35678(19)
H1 H 0.2510(44) 0.3067(37) 0.3648(34)
C3 C 0.27222(22) 0.16014(21) 0.22483(20)
H2 H 0.3211(49) 0.2313(43) 0.1637(43)
C4 C 0.10773(23) 0.14959(23) 0.20113(18)
O1 O 0.54987(16) 0.26146(16) 0.30566(15)
O2 O 0.48712(17) 0.23134(18) 0.50900(16)
O3 O 0.22747(17) 0.13944(16) 0.45340(14)
H3 H 0.1485(41) 0.1555(34) 0.4602(31)
O4 O 0.33793(17) 0.02537(15) 0.21275(14)
O5 O 0.03590(17) 0.25863(17) 0.21502(15)
H4? H -0.0798(62) 0.2025(46) 0.3554(53)
O6 O 0.05587(17) 0.03135(16) 0.17008(16)
O7 O -0.22621(18) 0.33592(19) 0.09013(15)
H5 H -0.1429(65) 0.3112(52) 0.070(5)
H6 H -0.2556(46) 0.4117(47) 0.0671(37)
O8 O -0.18979(21) 0.06244(18) 0.33650(18)
H7 H -0.2601(46) 0.0215(43) 0.3414(41)
H8 H -0.1435(43) 0.0254(37) 0.2948(36)
O9 O -0.42736(23) 0.07327(23) 0.06344(20)
H9 H -0.4001(39) 0.0342(39) 0.0114(39)
H10 H -0.3764(45) 0.1487(45) 0.0750(36)
O10 O 0.07160(18) 0.58449(18) 0.57599(17)
H11 H 0.0281(28) 0.5570(26) 0.5083(29)
H12 H -0.0126(47) 0.6364(44) 0.6347(44)