#------------------------------------------------------------------------------
#$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: svn://www.crystallography.net/cod/cif/2/2005166.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2005166
_journal_name_full  'Acta Crystallographica'
_journal_year      1996
_journal_volume    	C52
_journal_page_first    	1834
_journal_page_last    	1838
_publ_section_title    	
;
Specific Structural Features and Photochemical Properties of
three Benzo-Annulated 2,2-diphenyl[2H]chromenes
;
_chemical_formula_sum    	'C27 H18 O2'
_chemical_formula_structural    	'C27 H18 O2'
_chemical_formula_analytical    	'C27 H18 O2'
_chemical_formula_weight    	374.44
_symmetry_cell_setting    	monoclinic
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'
_symmetry_space_group_name_H-M    	'P 21/c'
_cell_length_a    	10.531(6)
_cell_length_b    	21.637(9)
_cell_length_c    	8.550(7)
_cell_angle_alpha    	90.00
_cell_angle_beta    	99.98(2)
_cell_angle_gamma    	90.00
_cell_volume    	1918.7(21)
_cell_formula_units_Z    	4
_exptl_crystal_density_diffrn    	1.296
_cell_measurement_temperature    	293(2)
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_B_iso_or_equiv
O1 0.4289(2) 0.6238(1) 0.0420(2) 5.0(4)
O2 0.5923(2) 0.8543(1) -0.0952(2) 6.3(4)
C1 0.2933(2) 0.6134(1) 0.0383(3) 4.7(4)
C2 0.2381(3) 0.6649(1) 0.1265(3) 5.5(5)
C3 0.2871(3) 0.7213(1) 0.1272(3) 5.6(5)
C4 0.3948(2) 0.7339(1) 0.0480(3) 4.9(4)
C5 0.4638(2) 0.6831(1) 0.0033(3) 4.5(4)
C6 0.5706(2) 0.6890(1) -0.0657(3) 4.7(4)
C7 0.6110(2) 0.7487(1) -0.0952(3) 4.7(4)
C8 0.5409(3) 0.7988(1) -0.0534(3) 5.1(5)
C9 0.4355(3) 0.7936(1) 0.0179(3) 5.5(5)
C10 0.6959(3) 0.8380(1) -0.1654(3) 5.8(5)
C11 0.7727(3) 0.8791(1) -0.2298(4) 7.4(7)
C12 0.8705(3) 0.8544(2) -0.2966(4) 7.8(7)
C13 0.8931(3) 0.7911(2) -0.2982(4) 7.2(6)
C14 0.8145(3) 0.7508(1) -0.2342(3) 6.1(5)
C15 0.7134(3) 0.7743(1) -0.1674(3) 5.1(5)
C16 0.2283(2) 0.6078(1) -0.1347(3) 4.8(4)
C17 0.1236(3) 0.6430(1) -0.2013(3) 5.4(5)
C18 0.0681(3) 0.6355(1) -0.3607(3) 6.7(6)
C19 0.1174(3) 0.5934(2) -0.4529(3) 7.4(7)
C20 0.2223(4) 0.5587(2) -0.3889(4) 8.1(7)
C21 0.2781(3) 0.5655(1) -0.2292(3) 6.8(6)
C22 0.2847(2) 0.5519(1) 0.1263(3) 5.0(4)
C23 0.1647(3) 0.5247(1) 0.1172(4) 7.3(7)
C24 0.1519(3) 0.4705(2) 0.2008(4) 8.1(8)
C25 0.2586(3) 0.4430(1) 0.2893(3) 6.8(6)
C26 0.3762(3) 0.4704(1) 0.2999(4) 7.0(6)
C27 0.3905(3) 0.5250(1) 0.2193(3) 6.3(5)
H2 0.17022 0.65453 0.18052 .
H3 0.25606 0.75441 0.18036 .
H6 0.60999 0.65101 -0.09327 .
H9 0.38667 0.82521 0.04652 .
H11 0.75438 0.91852 -0.22515 .
H12 0.92878 0.88277 -0.35119 .
H13 0.96534 0.77354 -0.35607 .
H14 0.82840 0.70692 -0.23953 .
H17 0.08660 0.67159 -0.14064 .
H18 -0.00596 0.65579 -0.40434 .
H19 0.07562 0.58674 -0.55173 .
H20 0.25797 0.52941 -0.45641 .
H21 0.35127 0.54307 -0.17923 .
H23 0.08491 0.54411 0.06026 .
H24 0.06886 0.45360 0.19269 .
H25 0.25199 0.40410 0.34718 .
H26 0.44881 0.45405 0.35594 .
H27 0.47711 0.54514 0.23357 .