[NH2NH3][M(HCOO)3] (M = Mn2+, Zn2+, Co2+and Mg2+): structural phase transitions, prominent dielectric anomalies and negative thermal expansion, and magnetic ordering
Chen, Sa; Shang, Ran; Hu, Ke-Li; Wang, Zhe-Ming; Gao, Song; Inorg. Chem. Front. 1 (2014) 83–; doi:10.1039/C3QI00034F

data_4350736
_publ_section_title
;
 [NH2NH3][M(HCOO)3] (M = Mn2+, Zn2+, Co2+and Mg2+): structural phase
 transitions, prominent dielectric anomalies and negative thermal
 expansion, and magnetic ordering
;
_journal_issue                   1
_journal_name_full               'Inorg. Chem. Front.'
_journal_page_first              83
_journal_paper_doi               10.1039/C3QI00034F
_journal_volume                  1
_journal_year                    2014
_chemical_formula_sum            'C3 H8 Mg N2 O6'
_chemical_formula_weight         192.42
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8888(2)
_cell_length_b                   13.7799(4)
_cell_length_c                   7.4295(2)
_cell_measurement_reflns_used    6455
_cell_measurement_temperature    292
_cell_measurement_theta_max      28.283
_cell_measurement_theta_min      3.395
_cell_volume                     807.64(4)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD (Nonius B. V., 1998)'
_computing_data_reduction
'HKL Denzo (Otwinowski & Minor, 1997) & maXus (Mackay et al., 1998)'
_computing_molecular_graphics    'Bruker SHELXTL V5.1 (Sheldrick, 1998)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      292
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'NONIUS KappaCCD'
_diffrn_measurement_method       CCD
_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  0.0339
_diffrn_reflns_av_sigmaI/netI    0.0254
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            14178
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         3.77
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.217
_exptl_absorpt_correction_T_max  0.955
_exptl_absorpt_correction_T_min  0.870
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995, 1997)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.583
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.245
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(3)
_refine_ls_extinction_coef       0.006(4)
_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   1.052
_refine_ls_hydrogen_treatment    constr.
_refine_ls_matrix_type           full
_refine_ls_number_parameters     117
_refine_ls_number_reflns         1996
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0387
_refine_ls_R_factor_gt           0.0307
_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^)+(0.0525P)^2^+0.0759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0808
_refine_ls_wR_factor_ref         0.0835
_reflns_number_gt                1756
_reflns_number_total             1996
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3qi00034f.txt
_cod_data_source_block           4Mg-292K
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 2(1)2(1)2(1)'
_cod_database_code               4350736