Crystal structure of Bis(hydrazine)bis(hydrazinecarboxylato)cobalt(II)

1975 ◽  
Vol 28 (4) ◽  
pp. 739 ◽  
Author(s):  
EN Maslen ◽  
CL Raston ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Cobalt Atom ◽  
Crystal Data ◽  
Full Matrix ◽  
X Ray

The crystal structure of the title compound [Co(N2H4)2(NH2NHCO2)2] has been determined at 295 K from X-ray diffractometer data and refined by full-matrix least squares to a residual of 0.059 for the 4985 independent reflections within the limit 2θ < 100� (Mo Kα radiation). Crystal data: monoclinic, P21/a, a 9.551(2), b 7.352(2), c 8.110(1) Ǻ, β 122.38(1)�, Z 2. ��� The compound is isostructural with the zinc analogue. The cobalt atom lies on a centre of symmetry; it is six-coordinate, being surrounded by monodentate hydrazine (Co-N, 2.178(2) Ǻ) and bidentate hydrazinecarboxylate ligands (Co-O, 2.064(2) Ǻ; Co-N, 2.198(2) Ǻ).

Crystal structure of baylissite, K2Mg(CO3)2,4H2O

1977 ◽  
Vol 30 (6) ◽  
pp. 1379 ◽  
Author(s):  
RB Bucat ◽  
JM Patrick ◽  
AH White ◽  
AC Willis
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Magnesium Atom ◽  
Carbonate Group ◽  
Full Matrix ◽  
X Ray

The crystal structure of the title compound has been determined by X- ray diffraction at 295 K, and refined by full-matrix least squares to a residual of 0.045 for 1153 ?observed? reflections. ��� Crystal data: monoclinic, P21/n, a = 11.404(4), b = 6.228(2), c = 6.826(2) Ǻ, β = 99.66(2)�, Z = 2. ��� The environment of the magnesium atom, located on the inversion centre, is a compressed octahedron (Mg-O, 2.054(2), 2.093(2), 2.107(3) Ǻ). The environment of the potassium is abnormally sparse, there being only five K...O contacts < 3.0 Ǻ. The carbonate group is symmetrical (C-O, 1.282(4)-1.298(3); O-C-O,119.6(3)-120.4(2)�).

Crystal structure of Tetracyclo[5,3,1,12,6,04,9]dodecane (iceane)

1977 ◽  
Vol 30 (8) ◽  
pp. 1837 ◽  
Author(s):  
DPG Hamon ◽  
CL Raston ◽  
GF Taylor ◽  
JN Varghese ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Rigid Body ◽  
Least Squares ◽  
Title Compound ◽  
Molecular Geometry ◽  
Thermal Motion ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Hexagonal Close Packed

The crystal structure of the title compound, C12H18, has been determined at 295 K by X-ray diffraction and refined by full-matrix least squares to a residual of 0.049 for 216 ?observed? reflections; molecular geometry has been corrected for the effects of thermal motion using a rigid body approximation. Crystals are hexagonal, P63/m, a = 6.582(1), c = 11.843(3) Ǻ, Z = 2, the molecules occupying a hexagonal close- packed array.

Crystal Structure of N,N,N′,N′-Tetrakis-(trimethylsilyl)ethane-1,2-diamine

1985 ◽  
Vol 38 (11) ◽  
pp. 1729 ◽  
Author(s):  
LM Engelhardt ◽  
CL Raston ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
Structure Determination ◽  
Title Compound ◽  
Full Matrix ◽  
X Ray ◽  
Methylene Groups

The title compound, [{(Me3Si)2NCH2}2], has been structurally characterized by a single-crystal X-ray structure determination at 130 K, being refined by full-matrix least-squares to a residual of 0.057 for 1244 'observed' reflections. Crystals are monoclinic, C2/c, a 21.00(2), b 9.089(8), c 11.744(9) Ǻ, β 92.31(7)°, Z 4. Molecules lie on inversion centres, but with some disorder of the methylene groups. Si -N are 1.735 Ǻ, and N-CH2 1.53(1) for the major fragment (70%). The nitrogen in the major fragment is approximately trigonal planar; Si -N- Si 124.6(3)°, Si -N-C 117.5(4), 115.5(4)°.

Structural and kinetic trans effects in cobalt(III) complexes with cobalt-sulfur bonds. The crystal structure of trans-Bis(ethylenediamine)imidazolesulfitocobalt(III) perchlorate dihydrate

1978 ◽  
Vol 31 (5) ◽  
pp. 993 ◽  
Author(s):  
CL Raston ◽  
AH White ◽  
JK Yandell
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Thermal Motion ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Internuclear Distances ◽  
Very High

The crystal structure of the title compound, [Co(C2N2H8)2(C3N2H4)(SO3)] ClO4,2H2O has been determined by X-ray diffraction, using diffractometer data, at 295 K, and refined by full-matrix least squares to a residual of 0.071 for 3425 ?observed? reflections. Crystals are orthorhombic, Pcmn, a 15.822(9), b 11.924(6), c 9.261(2) Ǻ, Z 4. The imidazole and sulfite ligands are trans in the cation, which has m symmetry (Co-S 2.223(2); Co-N 2.008(4) Ǻ). <Co-N(en)> is 1.964Ǻ. The apparent thermal motion of the sulfite about the Co-S axis is very high. The internal internuclear distances are compared to the data reported for series of similar complexes in which trans effects are observed.

Crystal structure of 'calcium sulphosilicate', Ca5(SiO4)2SO4

1974 ◽  
Vol 27 (3) ◽  
pp. 657 ◽  
Author(s):  
PD Brotherton ◽  
JM Epstein ◽  
MW Pryce ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Lattice Parameters ◽  
Crystal Data ◽  
Full Matrix ◽  
Lime Kiln

The crystal structure of the title compound, obtained as a coating from a lime kiln, has been shown to be isostructural with that of the mineral silicocarnotite and refined by full-matrix least-squares methods (570 independent diffractometer reflections). The lattice parameters of the latter compound were used to initiate the procedure, the final residual being 0.042. The correspondence in detail between the two structures is close. Crystal data: orthorhombic, Pcmn, a = 10.182(1), b = l5.398(2), c = 6.8500(9) �, Z = 4.

Crystal structure of Tris(N,N-diethyldithiocarbamato)thallium(III)

1978 ◽  
Vol 31 (9) ◽  
pp. 1927 ◽  
Author(s):  
DL Kepert ◽  
CL Raston ◽  
NK Roberts ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
Title Compound ◽  
Electron Pair ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
Space Group ◽  
X Ray

The crystal structure of the title compound, [Tl(S2CNEt2)3], has been determined by single-crystal X-ray diffraction methods at 295 K and refined by full-matrix least squares to a residual of 0.050 for 2517 'observed' reflections. Crystals are monoclinic, with space group A2/a, a 14.789(7), b 10.428(4), c 18.207(9) Ǻ, β 118.11(4)°, Z 4, and are isostructural with those of the previously determined gallium and indium analogues, the molecule having 2 symmetry with <Tl-S> 2.666 Ǻ. As in the dimethyl/thallium analogue, the departure of the TlS6 core symmetry from 3 is large and is examined in terms of electron-pair repulsion theory.

Crystal structure of Bis(O-ethylxanthato)-1,10-phenanthrolinecadmium(II)

1976 ◽  
Vol 29 (4) ◽  
pp. 739 ◽  
Author(s):  
CL Raston ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Crystallographic Axis ◽  
Full Matrix ◽  
X Ray ◽  
X Ray Crystallography ◽  
Phenanthroline Ligand

The crystal structure of the title compound, [Cd(C12H8N2)(CS2OEt)2], has been determined by X-ray crystallography using diffractometer data at 295 K and refined by full matrix least squares to a residual of 0.06 for 1350 'observed' reflections. Crystals are orthorhombic, P bcn, a = 14.870(4), b = 14.549(8), c = 10.249(1) �, Z = 4. The molecule lies on a twofold crystallographic axis; the phenanthroline ligand is symmetrically bidentate [Cd-N, 2.386(8) �], while the ethylxanthateligand is somewhat asymmetric [Cd-S, 2.647(3), 2.727(3)4 with a correspondingly asymmetric C-S geometry [C-S, 1.72(1), 1.66(1) �].

Crystal structure of Iodobis(1,10-phenanthroline)copper(II) iodide octasulphur

1977 ◽  
Vol 30 (9) ◽  
pp. 1965 ◽  
Author(s):  
TW Hambley ◽  
CL Raston ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Significant Interaction ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Pass Through

The crystal structure of the title compound, [Cu(C12H8N2)2I]I,S8, has been determined by X-ray diffraction at 295(1) K and refined by least squares to R 0.066 (2031 ?observed? reflections). ��� Crystal data: orthorhombic, Pbcb, a 7.984(5), b 16.690(4), c 22.986(12) Ǻ, Z 4. ��� The structure comprises five-coordinate trigonal bipyramidal [Cu(phen)2I]+ cations (I equatorial) lying on the 2 axes parallel to a which pass through the Cu-I bonds, together with iodide anions, and lattice S8 molecules, also lying on 2 axes but parallel to b. In the cation, Cu-I is 2.672(3), Cu-N (equatorial) 2.10(1) and Cu-N (axial) 2.00(1) Ǻ. S-S ranges from 2.004(7) to 2.059(7). There appears to be no significant interaction between the octasulphur molecules and any other species.

Crystal structure of diammonium aquapentachloroferrate(III)

1978 ◽  
Vol 31 (12) ◽  
pp. 2717 ◽  
Author(s):  
BN Figgis ◽  
CL Raston ◽  
RP Sharma ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
Title Compound ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Hydrogen Bonded

The crystal structure of the title compound, (NH4)2 [FeCl5(H2O)], has been redetermined by single-crystal X-ray diffraction at 295 K and refined by full matrix least squares to a residual of 0.054 for 1662 'observed' reflections. Crystals are orthorhombic, Pnma, a 13.706(2), b 9.924(1), c 7.024(1)Ǻ Z 4. Fe-O is 2.110(4)Ǻ; Fe-Cl range between 2.323(1)Ǻ (trans to OH2) and 2.350(1)-2.390(1) Ǻ (cis), the latter distances being very dependent upon hydrogen-bonded interactions with nearby species.

Crystal structure and electronic spectrum for Bis(O-ethylxanthato)pyridinezinc(II)

1976 ◽  
Vol 29 (4) ◽  
pp. 731 ◽  
Author(s):  
CL Raston ◽  
AH White ◽  
G Winter
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Electronic Spectrum ◽  
Title Compound ◽  
Pyridine Ring ◽  
Zinc Atom ◽  
Full Matrix ◽  
X Ray ◽  
Twofold Axis ◽  
Axis Passing

The crystal structure of the title compound [Zn(C5H5N)(CS2OEt)2] has been determined from X-ray diffractometer data at 295 K and refined by full-matrix least squares to a residual of 0.061 for 1100 'observed' reflections. Crystals are monoclinic A2/a, a = 14.001(5), b = 8.911(2), c = 13.731(6) � ,β = 104.80(3)�, Z = 4. The molecule lies on a twofold axis passing through the N-coordinated pyridine ring. The zinc atom is coordinated by the pyridine [Zn-N, 2.03(l) �] and a pair of symmetry related asymmetric ethylxanthate chelates [Zn-S, 2.748(3), 2.294(3)&.The electronic spectrum of the complex has been studied in a variety of basic solvents and the spectra rationalized in terms of the observed structure.

Sign in / Sign up

Export Citation Format

Share Document