Investigation of metal cyclam complexes as potential catalysts for the production of dimethyl carbonate
Constantine A. Stewart; Diane A. Dickie; Richard A. Kemp; Inorganica Chimica Acta 392 (2012) 268–276; doi:10.1016/j.ica.2012.03.025

data_1512611
_publ_section_title
;
 Investigation of metal cyclam complexes as potential catalysts for the
 production of dimethyl carbonate
;
_journal_name_full
;
Inorganica Chimica Acta
;
_journal_page_first              268
_journal_page_last               276
_journal_paper_doi               10.1016/j.ica.2012.03.025
_journal_volume                  392
_journal_year                    2012
_chemical_formula_sum            'C16 H29 N5'
_chemical_formula_weight         291.44
_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
_cell_angle_alpha                100.684(7)
_cell_angle_beta                 92.958(7)
_cell_angle_gamma                113.635(6)
_cell_formula_units_Z            2
_cell_length_a                   8.3721(9)
_cell_length_b                   8.5895(10)
_cell_length_c                   12.9308(13)
_cell_measurement_reflns_used    278
_cell_measurement_temperature    228(2)
_cell_measurement_theta_max      16.84
_cell_measurement_theta_min      2.66
_cell_volume                     828.88(16)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      228(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0458
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3843
_diffrn_reflns_theta_full        27.66
_diffrn_reflns_theta_max         27.66
_diffrn_reflns_theta_min         2.66
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9835
_exptl_absorpt_correction_T_min  0.9734
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker, SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.168
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.551
_refine_diff_density_min         -0.617
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.120
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3843
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.120
_refine_ls_R_factor_all          0.1089
_refine_ls_R_factor_gt           0.0735
_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^)+(0.1438P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2311
_refine_ls_wR_factor_ref         0.2542
_reflns_number_gt                2288
_reflns_number_total             3843
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ICA-2012-392-268-276-2.cif
_cod_data_source_block           twin4
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1512611