Tetrabutylammonium di(DL-tartrate) dihydrate
Callear, Samantha K.; Hursthouse, Michael B.; Threlfall, Terence L.; Crystal Structure Report Archive  (2008) 576–; doi:

data_1519972
_publ_section_title
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 Tetrabutylammonium di(DL-tartrate) dihydrate
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              576
_journal_year                    2008
_chemical_formula_sum            'C24 H51 N O14'
_chemical_formula_weight         577.66
_chemical_name_systematic
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Tetrabutylammonium di(DL-tartrate) dihydrate
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_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                78.41(3)
_cell_angle_beta                 78.45(3)
_cell_angle_gamma                89.86(3)
_cell_formula_units_Z            2
_cell_length_a                   9.3454(19)
_cell_length_b                   9.3736(19)
_cell_length_c                   17.624(4)
_cell_measurement_reflns_used    3411
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1480.6(6)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.800
_diffrn_measured_fraction_theta_max 0.793
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1272
_diffrn_reflns_av_sigmaI/netI    0.2821
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12188
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_T_max  0.9968
_exptl_absorpt_correction_T_min  0.9792
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             628
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.546
_refine_diff_density_min         -0.393
_refine_diff_density_rms         0.116
_refine_ls_extinction_coef       0.039(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     382
_refine_ls_number_reflns         5375
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.981
_refine_ls_R_factor_all          0.2391
_refine_ls_R_factor_gt           0.1106
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1278P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2479
_refine_ls_wR_factor_ref         0.2993
_reflns_number_gt                2266
_reflns_number_total             5375
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            eCrystal-576.cif
_cod_data_source_block           04skc0003p1
_cod_depositor_comments
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Citation :
Callear, Samantha K. and Hursthouse, Michael B. and 
Threlfall, Terence L. (2008) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/576)

More at:
http://ecrystals.chem.soton.ac.uk/576/
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_cod_original_cell_volume        1480.5(5)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1519972