Air-Stable Titanium Alkoxide Based Metal-Organic Framework as an Initiator for Ring-Opening Polymerization of Cyclic Esters
Christopher J. Chuck; Matthew G. Davidson; Matthew D. Jones; Gabriele Kociok-Köhn; Matthew D. Lunn; Stephen Wu; Inorganic Chemistry 45 (2006) 6595–6597; doi:10.1021/ic060969+

data_4327306
_publ_contact_author
;       Matthew G Davidson
        University of Bath
        Department of Chemistry
        Bath, BA2 7AY
        United Kingdom
;
_publ_contact_author_email       m.g.davidson@bath.ac.uk
_publ_contact_author_fax         '# 44 1225 82 6231'
_publ_contact_author_phone       '# 44 1225 38 4467'
_publ_section_title
;
 Air-Stable Titanium Alkoxide Based Metal-Organic Framework as an
 Initiator for Ring-Opening Polymerization of Cyclic Esters
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6595
_journal_page_last               6597
_journal_paper_doi               10.1021/ic060969+
_journal_volume                  45
_journal_year                    2006
_chemical_formula_moiety         'C20 H42 O10 Ti2'
_chemical_formula_sum            'C20 H42 O10 Ti2'
_chemical_formula_weight         538.34
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.9760(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.9910(2)
_cell_length_b                   9.2710(2)
_cell_length_c                   12.3350(2)
_cell_measurement_reflns_used    10448
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1233.91(4)
_computing_cell_refinement       'HKL Scalepack (Otwinski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo & Scalepack (Otwinski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119.
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'nonius kappa ccd'
_diffrn_measurement_method       ccd
_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  0.0329
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            11188
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.36
_exptl_absorpt_coefficient_mu    0.697
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.449
_exptl_crystal_description       block
_exptl_crystal_F_000             572
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.402
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     149
_refine_ls_number_reflns         2800
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0328
_refine_ls_R_factor_gt           0.0286
_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^)+(0.0342P)^2^+0.7095P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0764
_refine_ls_wR_factor_ref         0.0787
_reflns_number_gt                2568
_reflns_number_total             2800
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0609692Bsi20060601_105811_1.cif
_cod_data_source_block           '[Ti2L3(LH)2]\\infty'
_cod_database_code               4327306