A non-photochemical route for the regioselective preparation of rtct-pyridylcyclobutanes via hydrothermal isomerisation promoted by polymolybdates
Briceño, Alexander; Fulgence, Aaron; Hill, Yennifer; Atencio, Reinaldo; Dalton Transactions  (2008) 3275–3278; doi:10.1039/b801845f

data_7003989
_publ_section_title
;
 A non-photochemical route for the regioselective preparation of
 rtct-pyridylcyclobutanes via hydrothermal isomerisation promoted by
 polymolybdates
;
_journal_issue                   25
_journal_name_full               'Dalton Transactions'
_journal_page_first              3275
_journal_page_last               3278
_journal_paper_doi               10.1039/b801845f
_journal_year                    2008
_chemical_compound_source        Synthesis
_chemical_formula_moiety         '(C48 H44 N8 Mo8 O26), 12(H2O)'
_chemical_formula_sum            'C48 H68 Mo8 N8 O38'
_chemical_formula_weight         2132.62
_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                 102.3160(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.0150(4)
_cell_length_b                   20.6053(4)
_cell_length_c                   12.9391(3)
_cell_measurement_reflns_used    5215
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.04
_cell_measurement_theta_min      1.88
_cell_volume                     3390.12(15)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_molecular_graphics
;
SHELXLTL-NT V5.1 (Bruker AXS, 1998) and DIAMOND
(Brandenburg, 1998)
;
_computing_publication_material
;
SHELXLTL-NT V5.1 (Bruker AXS, 1998) and PLATON (Spek, 2003).
;
_computing_structure_refinement  'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_computing_structure_solution    'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 14.6306
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.803
_diffrn_measurement_device
;
Mercury (2x2 bin mode)
;
_diffrn_measurement_device_type  'Rigaku AFC7S Mercury'
_diffrn_measurement_method       '\w '
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0972
_diffrn_reflns_av_sigmaI/netI    0.0950
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            38836
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.06
_diffrn_reflns_theta_min         1.88
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.533
_exptl_absorpt_correction_T_max  0.842
_exptl_absorpt_correction_T_min  0.738
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    2.089
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2104
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.092
_refine_diff_density_min         -0.961
_refine_diff_density_rms         0.173
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     452
_refine_ls_number_reflns         6620
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.1265
_refine_ls_R_factor_gt           0.0675
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0555P)^2^+21.7959P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1385
_refine_ls_wR_factor_ref         0.1687
_reflns_number_gt                4128
_reflns_number_total             6620
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b801845f.txt
_cod_data_source_block           p21n
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed
to 'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7003989