Investigations on the Synthesis, Structures, and Properties of New Copper(I) 2,3-Dimethylpyrazine Coordination Compounds
Jess, Inke; Näther, Christian; Inorganic Chemistry 45 (2006) 7446–7454; doi:10.1021/ic060747b

data_4332720
_publ_section_title
;
 Investigations on the Synthesis, Structures, and Properties of New
 Copper(I) 2,3-Dimethylpyrazine Coordination Compounds
;
_journal_issue                   18
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7446
_journal_page_last               7454
_journal_paper_doi               10.1021/ic060747b
_journal_volume                  45
_journal_year                    2006
_chemical_formula_sum            'C6 H8 Cl2 Cu2 N2'
_chemical_formula_weight         306.12
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 100.388(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.303(2)
_cell_length_b                   3.9135(2)
_cell_length_c                   15.1940(12)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27
_cell_measurement_theta_min      10
_cell_volume                     1772.3(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_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  0.0312
_diffrn_reflns_av_sigmaI/netI    0.0218
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8128
_diffrn_reflns_theta_full        27.93
_diffrn_reflns_theta_max         27.93
_diffrn_reflns_theta_min         2.73
_exptl_absorpt_coefficient_mu    5.339
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.294
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.725
_refine_diff_density_min         -0.988
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         2068
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0462
_refine_ls_R_factor_gt           0.0363
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0445P)^2^+7.5082P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0874
_refine_ls_wR_factor_ref         0.0921
_reflns_number_gt                1722
_reflns_number_total             2068
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic060747bsup4.cif
_cod_data_source_block           d9
_cod_original_cell_volume        1772.4(2)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4332720