Carbophosphazene-Supported Ligand Systems Containing Pyrazole/Guanidine Coordinating Groups
Vadapalli Chandrasekhar; Venkatasubbiah Krishnan; Ramachandran Azhakar; Tapas Senapati; Atanu Dey; R. Suriya Narayanan; Inorganic Chemistry 50 (2011) 2568–2579; doi:10.1021/ic102415x

data_4324689
_publ_contact_author_address
;Head, Department of Chemistry
Indian Institute of Technology Kanpur
Kanpur 208016
Uttarpradesh
India
;
_publ_contact_author_email       vc@iitk.ac.in
_publ_contact_author_fax         '+91-512-259 7436'
_publ_contact_author_name        'Prof. V. Chandrasekhar'
_publ_contact_author_phone       '+91-512-259 7259'
_publ_section_title
;
 Carbophosphazene-Supported Ligand Systems Containing Pyrazole/Guanidine
 Coordinating Groups
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2568
_journal_page_last               2579
_journal_paper_doi               10.1021/ic102415x
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C16 H26 N9 P'
_chemical_formula_sum            'C16 H26 N9 P'
_chemical_formula_weight         375.43
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 90.822(16)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.762(4)
_cell_length_b                   8.8893(16)
_cell_length_c                   14.129(3)
_cell_measurement_reflns_used    59
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15.79
_cell_measurement_theta_min      2.55
_cell_volume                     1979.5(7)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '2\q/\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  0.0621
_diffrn_reflns_av_sigmaI/netI    0.0168
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2363
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.58
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.159
_exptl_absorpt_correction_T_max  0.7804
_exptl_absorpt_correction_T_min  0.3709
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.260
_exptl_crystal_description       prism
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.56
_exptl_crystal_size_min          0.45
_refine_diff_density_max         0.233
_refine_diff_density_min         -0.169
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.05(9)
_refine_ls_extinction_coef       0.0054(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         2361
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0366
_refine_ls_R_factor_gt           0.0334
_refine_ls_shift/su_max          0.169
_refine_ls_shift/su_mean         0.006
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0595P)^2^+0.0200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0836
_refine_ls_wR_factor_ref         0.0857
_reflns_number_gt                2213
_reflns_number_total             2361
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic102415x_si_002_01.cif
_cod_data_source_block           Compound_1
_cod_database_code               4324689