Structural and kinetic studies of the polymerization reactions of ε-caprolactone catalyzed by (pyrazol-1-ylmethyl)pyridine Cu(ii) and Zn(ii) complexes.
Ojwach, Stephen O.; Okemwa, Teddy T.; Attandoh, Nelson W.; Omondi, Bernard; Dalton transactions (Cambridge, England : 2003) 42 (2013) 10735–10745; doi:10.1039/c3dt51338f

data_7021789
_publ_section_title
;
 Structural and kinetic studies of the polymerization reactions of
 \e-caprolactone catalyzed by (pyrazol-1-ylmethyl)pyridine Cu(ii) and
 Zn(ii) complexes.
;
_journal_issue                   30
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10735
_journal_page_last               10745
_journal_paper_doi               10.1039/c3dt51338f
_journal_volume                  42
_journal_year                    2013
_chemical_formula_moiety         'C15 H19 N3 O4 Zn'
_chemical_formula_sum            'C15 H19 N3 O4 Zn'
_chemical_formula_weight         370.70
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 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                   14.7323(10)
_cell_length_b                   8.1094(5)
_cell_length_c                   13.5844(8)
_cell_measurement_reflns_used    32715
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.35
_cell_measurement_theta_min      2.77
_cell_volume                     1622.93(18)
_computing_cell_refinement       'SAINT-plus (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT-Plus and XPREP (Bruker, 2004)'
_computing_molecular_graphics
'DIAMOND (Brandenburg & Putz, 2005), ORTEP3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 ApexII 4K Kappa 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  0.0474
_diffrn_reflns_av_sigmaI/netI    0.0284
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            30990
_diffrn_reflns_theta_full        28.35
_diffrn_reflns_theta_max         28.35
_diffrn_reflns_theta_min         2.77
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.536
_exptl_absorpt_correction_T_max  0.9135
_exptl_absorpt_correction_T_min  0.8137
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.517
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.398
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.054
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.441(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     213
_refine_ls_number_reflns         4040
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0300
_refine_ls_R_factor_gt           0.0253
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0300P)^2^+0.3352P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0574
_refine_ls_wR_factor_ref         0.0593
_reflns_number_gt                3707
_reflns_number_total             4040
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51338f.txt
_cod_data_source_block           mo_10bo_so7_0ma
_cod_original_sg_symbol_H-M      Pna21
_cod_database_code               7021789