Using Water as a Design Element in Crystal Engineering. Host−Guest Compounds of Hydrated 3,5-Dihydroxybenzoic Acid
Varughese, Sunil; Desiraju, Gautam R.; Crystal Growth & Design 10 (2010) 4184–; doi:10.1021/cg100872w

data_4510991
_publ_section_title
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 Using Water as a Design Element in Crystal Engineering. Host&#x2212;Guest
 Compounds of Hydrated 3,5-Dihydroxybenzoic Acid
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_journal_issue                   9
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4184
_journal_paper_doi               10.1021/cg100872w
_journal_volume                  10
_journal_year                    2010
_chemical_formula_moiety         '2(C7 H6 O4), 0.5(C4 H6 O4), 2(H2 O)'
_chemical_formula_sum            'C16 H19 O12'
_chemical_formula_weight         403.31
_chemical_name_common            '3,5-Dihydroxybenzoic acid dimethyloxalate'
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                99.12(3)
_cell_angle_beta                 93.63(3)
_cell_angle_gamma                110.63(3)
_cell_formula_units_Z            2
_cell_length_a                   7.254(2)
_cell_length_b                   9.334(2)
_cell_length_c                   14.517(3)
_cell_measurement_reflns_used    894
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      46.23
_cell_measurement_theta_min      4.72
_cell_volume                     900.7(4)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_molecular_graphics    'Material Studio 4.4'
_computing_structure_refinement  'SHELXTL (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Rigaku Mercury375R (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0556
_diffrn_reflns_av_sigmaI/netI    0.0660
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7814
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.43
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  0.9884
_exptl_absorpt_correction_T_min  0.9707
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private commounication'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.487
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Blocks
_exptl_crystal_F_000             422
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.439
_refine_diff_density_min         -0.439
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.202
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         3201
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.201
_refine_ls_R_factor_all          0.1096
_refine_ls_R_factor_gt           0.0968
_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^)+(0.0674P)^2^+6.9362P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2907
_refine_ls_wR_factor_ref         0.2951
_reflns_number_gt                2554
_reflns_number_total             3201
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            03_dimethyloxalate.CIF
_cod_data_source_block           3
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
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_cod_database_code               4510991