Dialkylgallium alkoxides – a tool for facile and stereoselective synthesis of PLA-drug conjugates
Cybularczyk, Martyna; Zaremba, Rafał; Hurko, Aleksander; Plichta, Andrzej Tadeusz; Dranka, Maciej; Horeglad, Paweł; New Journal of Chemistry 41 (2017) 14851–14854; doi:10.1039/C7NJ03089D

data_7056740
_publ_section_title
;
 Dialkylgallium alkoxides -- a tool for facile and stereoselective
 synthesis of PLA-drug conjugates
;
_journal_issue                   24
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              14851
_journal_page_last               14854
_journal_paper_doi               10.1039/C7NJ03089D
_journal_volume                  41
_journal_year                    2017
_chemical_formula_moiety         'C10 H28 Ga2 N2 O2'
_chemical_formula_sum            'C10 H28 Ga2 N2 O2'
_chemical_formula_weight         347.78
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-05-28
_audit_creation_method
;
Olex2 1.2-beta
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_audit_update_record
;
2017-08-16 deposited with the CCDC.
2017-11-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.446(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.6946(3)
_cell_length_b                   10.7516(5)
_cell_length_c                   11.4183(5)
_cell_measurement_reflns_used    2639
_cell_measurement_temperature    120.0(1)
_cell_measurement_theta_max      31.0510
_cell_measurement_theta_min      4.1670
_cell_volume                     818.15(6)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      120.0(1)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.3347
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -98.00   7.00   1.00   18.00    --  -19.34 -77.00-150.00  105
  2  \w    -45.00 -10.00   1.00   18.00    --  -19.34 -38.00-120.00   35
  3  \w    -98.00 -71.00   1.00   18.00    --  -19.34-179.00-120.00   27
  4  \w    -68.00 -35.00   1.00   18.00    --  -19.34-179.00-120.00   33
  5  \w    -54.00  48.00   1.00   18.00    --   20.12 -57.00  90.00  102
  6  \w    -39.00  44.00   1.00   18.00    --   20.12 -38.00-120.00   83
  7  \w     77.00 110.00   1.00   18.00    --   20.12 179.00-120.00   33
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0220495000
_diffrn_orient_matrix_UB_12      0.0267015000
_diffrn_orient_matrix_UB_13      -0.0565745000
_diffrn_orient_matrix_UB_21      -0.0954734000
_diffrn_orient_matrix_UB_22      -0.0291706000
_diffrn_orient_matrix_UB_23      -0.0048044000
_diffrn_orient_matrix_UB_31      -0.0414214000
_diffrn_orient_matrix_UB_32      0.0528035000
_diffrn_orient_matrix_UB_33      0.0259615000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0564
_diffrn_reflns_av_unetI/netI     0.0386
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6987
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         26.367
_diffrn_reflns_theta_min         3.394
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    3.285
_exptl_absorpt_correction_T_max  0.814
_exptl_absorpt_correction_T_min  0.567
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
Analytical numeric absorption correction using a multifaceted crystal
            model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.412
_exptl_crystal_description       rhombohedral
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.248
_exptl_crystal_size_mid          0.228
_exptl_crystal_size_min          0.068
_refine_diff_density_max         0.666
_refine_diff_density_min         -0.741
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.147
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     112
_refine_ls_number_reflns         1672
_refine_ls_number_restraints     101
_refine_ls_restrained_S_all      1.141
_refine_ls_R_factor_all          0.0419
_refine_ls_R_factor_gt           0.0356
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0470P)^2^+0.2920P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0912
_refine_ls_wR_factor_ref         0.0984
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1465
_reflns_number_total             1672
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7nj03089d2.cif
_cod_data_source_block           md408_ph_rz01
_cod_database_code               7056740
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              83926