(2<i>R</i>)-2-Methylpiperazinediium tetrachloridocuprate(II)
Chen, Li Zhaung; Wan, Sheng; Acta Crystallographica Section E 66 (2010) m376–; doi:10.1107/S1600536810007877

data_2225681
_publ_section_title
;
 (2<i>R</i>)-2-Methylpiperazinediium tetrachloridocuprate(II)
;
_journal_coeditor_code           RZ2412
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m376
_journal_paper_doi               10.1107/S1600536810007877
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          '(C5 H14 N2) [Cu Cl4]'
_chemical_formula_moiety         'C5 H14 N2 2+, Cl4 Cu 2-'
_chemical_formula_sum            'C5 H14 Cl4 Cu N2'
_chemical_formula_weight         307.53
_chemical_name_systematic
;
(2<i>R</i>)-2-Methylpiperazinediium tetrachloridocuprate(II)
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_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                   6.0169(12)
_cell_length_b                   12.985(3)
_cell_length_c                   14.644(3)
_cell_measurement_reflns_used    2469
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      3.14
_cell_volume                     1144.1(4)
_computing_cell_refinement       'CrystalClear (Rigaku, 2005)'
_computing_data_collection       'CrystalClear (Rigaku, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku SCXmini'
_diffrn_measurement_method       '\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  0.0510
_diffrn_reflns_av_sigmaI/netI    0.0400
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11992
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    2.796
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.87
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku, 2005)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.785
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             620
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.530
_refine_ls_abs_structure_details 'Flack (1983), 1091 Friedel pairs'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_coef       0.193(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         2627
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      2.854
_refine_ls_R_factor_all          0.0272
_refine_ls_R_factor_gt           0.0251
_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^)+(0.0239P)^2^+0.0175P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0591
_refine_ls_wR_factor_ref         0.0601
_reflns_number_gt                2469
_reflns_number_total             2627
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            rz2412.cif
_cod_data_source_block           I
_cod_database_code               2225681
_cod_database_fobs_code          2225681