Detailed investigations of phase transitions and magnetic structure in Fe(iii), Mn(ii), Co(ii) and Ni(ii) 3,4,5-trihydroxybenzoate (gallate) dihydrates by neutron and X-ray diffraction.
Saines, Paul J.; Yeung, Hamish H.-M.; Hester, James R.; Lennie, Alistair R.; Cheetham, Anthony K.; Dalton transactions (Cambridge, England : 2003) 40 (2011) 6401–6410; doi:10.1039/c0dt01687j

data_7015501
_publ_section_title
;
 Detailed investigations of phase transitions and magnetic structure in
 Fe(iii), Mn(ii), Co(ii) and Ni(ii) 3,4,5-trihydroxybenzoate (gallate)
 dihydrates by neutron and X-ray diffraction.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6401
_journal_page_last               6410
_journal_paper_doi               10.1039/c0dt01687j
_journal_volume                  40
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C7 H4 Ni O5, 2(H2 O)'
_chemical_formula_sum            'C7 H8 Ni O7'
_chemical_formula_weight         262.84
_chemical_name_systematic
;
?
;
_space_group_IT_number           152
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      152
_symmetry_space_group_name_Hall  'P 31 2"'
_symmetry_space_group_name_H-M   'P 31 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-11-10T10:01:24-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   8.8079(3)
_cell_length_b                   8.8079(3)
_cell_length_c                   21.1663(6)
_cell_measurement_reflns_used    6087
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      29.1629
_cell_measurement_theta_min      2.8319
_cell_measurement_wavelength     0.71073
_cell_volume                     1422.07(8)
_computing_cell_refinement       'CrysAlisPro, Oxford Diffraction, 2010'
_computing_data_collection       'CrysAlisPro, Oxford Diffraction, 2010'
_computing_data_reduction        'CrysAlisPro, Oxford Diffraction, 2010'
_computing_molecular_graphics    'Diamond (Brandenburg 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.96
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0432
_diffrn_reflns_av_unetI/netI     0.0323
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            16110
_diffrn_reflns_theta_full        26.32
_diffrn_reflns_theta_max         29.23
_diffrn_reflns_theta_min         2.84
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.065
_exptl_absorpt_correction_T_max  0.922
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET)
(compiled Aug 2 2010,13:00:58)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.842
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rhombohedral
_exptl_crystal_F_000             804
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.0831
_exptl_crystal_size_min          0.0561
_refine_diff_density_max         0.399
_refine_diff_density_min         -0.313
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.003(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     161
_refine_ls_number_reflns         2410
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0329
_refine_ls_R_factor_gt           0.0272
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0310P)^2^+1.2462P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0546
_refine_ls_wR_factor_ref         0.0566
_reflns_number_gt                2204
_reflns_number_total             2410
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt01687j.txt
_cod_data_source_block           nigallate_p1
_cod_original_cell_volume        1422.06(7)
_cod_database_code               7015501