Metal ion recognition. Interaction of a series of successively N-benzylated derivatives of 1,4,8,11-tetraazacyclotetradecane (cyclam) with selected transition and post-transition metal ions
Dong, Ying; Farquhar, Sandra; Gloe, Karsten; Lindoy, Leonard F.; Rumbel, Brendan R.; Turner, Peter; Wichmann, Kathrin; Dalton Transactions  (2003) 1558–; doi:10.1039/b300002h

data_7012673
_publ_section_title
;
 Metal ion recognition. Interaction of a series of successively
 N-benzylated derivatives of 1,4,8,11-tetraazacyclotetradecane (cyclam)
 with selected transition and post-transition metal ions
;
_journal_issue                   8
_journal_name_full               'Dalton Transactions'
_journal_page_first              1558
_journal_paper_doi               10.1039/b300002h
_journal_year                    2003
_chemical_formula_sum            'C17 H30 N6 O6 Pb'
_chemical_formula_weight         621.66
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                86.322(4)
_cell_angle_beta                 89.620(4)
_cell_angle_gamma                87.247(4)
_cell_formula_units_Z            4
_cell_length_a                   11.847(3)
_cell_length_b                   12.448(3)
_cell_length_c                   14.959(4)
_cell_measurement_reflns_used    961
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.686
_cell_measurement_theta_min      2.321
_cell_volume                     2198.9(10)
_computing_cell_refinement       'SAINT (Bruker,1995)'
_computing_data_collection       'SMART (Bruker,1995)'
_computing_data_reduction        'SAINT and XPREP (Bruker 1995)'
_computing_molecular_graphics
;
teXsan for Windows (MSC, 1997) 
xtal 3.6 (Hall,du Boulay, D.J. & Olthof-Hazekamp, R. 1999)
ORTEPII  (Johnson,C.K., 1976). 
WinGX (Farrugia, 1999)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_crystal_treatment
;
attached with Exxon Paratone N, to a short length 
of fibre supported on a thin piece of copper wire 
inserted in a copper mounting pin.  The crystal was 
quenched in a cold nitrogen gas stream from an 
Oxford Cryosystems Cryostream. 
;
_diffrn_measured_fraction_theta_full 0.896
_diffrn_measured_fraction_theta_max 0.896
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0314
_diffrn_reflns_av_sigmaI/netI    0.0201
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            20115
_diffrn_reflns_theta_full        28.10
_diffrn_reflns_theta_max         28.10
_diffrn_reflns_theta_min         1.36
_diffrn_standards_decay_%        0.07
_diffrn_standards_number         278
_exptl_absorpt_coefficient_mu    7.717
_exptl_absorpt_correction_T_max  0.6028
_exptl_absorpt_correction_T_min  0.0692
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
Gaussian (Coppens et al., 1965) 
XPREP  (Bruker, 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.878
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tabular
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.508
_exptl_crystal_size_mid          0.187
_exptl_crystal_size_min          0.066
_refine_diff_density_max         0.968
_refine_diff_density_min         -0.830
_refine_diff_density_rms         0.093
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.201
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     565
_refine_ls_number_reflns         9607
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.201
_refine_ls_R_factor_all          0.0234
_refine_ls_R_factor_gt           0.0194
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.02P)^2^+0.5P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0447
_refine_ls_wR_factor_ref         0.0454
_reflns_number_gt                8472
_reflns_number_total             9607
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b300002h.txt
_cod_data_source_block           lfl63
_cod_original_cell_volume        2199.0(10)
_cod_original_sg_symbol_H-M      'P -1       '
_cod_database_code               7012673