scholarly journals Crystal structure of the coordination compound of triiodidomethyltin(IV) with 2,2′-bipyridine, MeSnI3·bipy

2016 ◽  
Vol 72 (1) ◽  
pp. 17-20
Author(s):  
Hans Reuter ◽  
Martin Reichelt
Keyword(s):  
Chelate Ring ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Orthorhombic Space Group ◽  
Methyl Group ◽  
Bond Lengths ◽  
Distorted Octahedral ◽  
Bipyridine Ligand ◽  
Twisting Angle ◽  
Van Der Waals Contacts

The title compound, (2,2′-bipyridine-κ2N,N′)triiodidomethyltin(IV), [Sn(CH3)I3(C10H8N2)], crystallizing in the non-centrosymmetric orthorhombic space groupPca21as an inversion twin, represents one of the few structurally characterized coordination compounds of an organotin(IV) trihalide with 2,2′-biypridine. Its distorted octahedral geometry shows a meridional arrangement of the I atoms and the methyl group is in-plane with the five-membered chelate ring. Asymmetric bonding of the biypridine ligand to the tin(IV) atom is reflected by different Sn—N bond lengths [2.268 (4) Åversus2.293 (4) Å] and caused by the statictranseffect of the methyl group. Sn—I bond lengths show some differences with respect to their orientation to the methyl group or the bipyridine ligand, respectively. Angular distortions in the coordination sphere of the SnIVatom mainly arise from the large I atoms. Distortion of the 2,2′-bipyridine ligand as a result of its coordination to the SnIVatom are described by the twisting angle of 2.5 (2)° between the least-squares planes of the two pyridine rings, as well as by the angle of 6.2 (2)° between the two lines through the pyridine-connecting C atoms and thepara-orientated C atoms. Directional intermolecular interactions are restricted to weak I...H van der Waals contacts.

Structure cristalline et moléculaire du cis-dithiocyanatobis(phénanthroline-1,10)mercure(II), Hg(SCN)2(C12H8N2)2

1974 ◽  
Vol 52 (16) ◽  
pp. 2923-2927 ◽  
Author(s):  
André L. Beauchamp ◽  
Bernard Saperas ◽  
Roland Rivest
Keyword(s):  
Heavy Atom ◽  
Octahedral Geometry ◽  
Van Der Waals Interactions ◽  
Distorted Octahedral Geometry ◽  
Triclinic Space Group ◽  
Bond Lengths ◽  
R Factor ◽  
Distorted Octahedral ◽  
Phenanthroline Ligands ◽  
Heavy Atom Method

The compound cis-Hg(SCN)2(Phen)2 belongs to the triclinic space group [Formula: see text] with a = 13.252(5), b = 11.077(4), c = 8.443(3) Å, α = 105.20(3), β = 83.25 (3), γ = 90.92(3)°, and Z = 2. The structure was solved by the heavy atom method and refined on 1718 independent reflections to an R factor of 0.069. The crystal contains discrete molecules, in which mercury is coordinated to four nitrogen atoms from two phenanthroline molecules and to two sulfur atoms from thiocyanate groups. These donor atoms define a distorted octahedral geometry around mercury. The Hg—N bond lengths are in the range 2.42(2)–2.52(2) Å, whereas the Hg—S bonds are equal to 2.622(8) and 2.582(8) Å. The molecules are packed in layers parallel to the (110) planes and the layers are held together by normal van der Waals interactions. Within the layers, the packing of the complex is characterized by parallel stacking of phenanthroline ligands at distances of ∼3.4 Å. The terminal nitrogen atoms of the thiocyanate groups are uncoordinated.

Reactions of But-2-yne and Hexafluorobut-2-yne with Dicarbonyl(η-pentamethylcyclopentadienyl)-cobalt, -rhodium and -iridium. Structure of the iridium complex (η-C5Me5)Ir2(CO)2(CF3C2CF3)3H

1978 ◽  
Vol 31 (9) ◽  
pp. 1937 ◽  
Author(s):  
PA Corrigan ◽  
RS Dickson ◽  
GD Fallon ◽  
LJ Michel ◽  
C Mok
Keyword(s):  
Major Product ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Iridium Complex ◽  
Orthorhombic Space Group ◽  
Reaction Conditions ◽  
R Factor ◽  
Distorted Octahedral ◽  
A Cell ◽  
Dirhodium Complexes

The reactions of but-2-yne and hexafluorobut-2-yne with the complexes (η-C5Me5)M(CO)2, M = CO, Rh, or Ir, have been compared. A cyclopentadienone complex, (η-C5Me5)M[C4Me4CO]2 is the major product formed in the reaction of but-2-yne with (η-C5Me5)M(CO)2, M = Co or Rh. The cobalt system also gives some hexamethylbenzene whereas the rhodium system yields the pentadienone-dirhodium complex (q-C5Me5)2Rh2(MeC2Me)2CO. The cyclopentadienone complexes (η-C5Me5)M[C4(CF3)4CO], M = CO and Rh, were major products from the reactions of hexa- fluorobut-2-yne with (η-C5Me5)M(CO)2. Hexakis(trifluoromethyl)benzene and the tetrahapto- benzene complexes (η-C5Me5)M[η4-C6(CF3)6], M = Co or Rh, were minor products from these reactions. Small amounts of the dirhodium complexes (η-C5Me5)2Rh2(CF3C2CF3)2(CO)n, n = 1 or 2, were also isolated from the rhodium system under some reaction conditions. No products could be isolated from the reaction between (η-C5Me5)Ir(CO)2 and but-2-yne, but the reaction with hexafluorobut-2-yne gives two organoiridium complexes. One complex, (η-C5Me5)Ir(CO)2(CF3C2CF3), incorporates an iridiocyclobutenone ring and one terminal carbonyl. The second, (η-Ir5Me5)Ir2(CO)2(CF3C2CF3)3H, has been characterized crystallographically. The compound crystallizes with four molecules in the orthorhombic space group Pnma in a cell of di- mensions a 14.262(5), b 13.293(5), c 15.027(5) Ǻ. The structure has been refined by standard methods to a conventional R factor of 0.072, based on 2061 reflections above background. The environments of the two iridium atoms are markedly different. One forms part of a metallopentadiene ring, and it is also attached to two terminal carbonyls, a σ-bonded C(CF3)=C(CF3)H group, and the other iridium atom [Ir-Ir distance 2.737(1) Ǻ]. Overall, this iridium has a distorted octahedral geometry. The second iridium is n-bonded in a conventional sandwich manner to the C5Me5 and iridiocycle rings; these two rings have a staggered conformation and are close to parallel.

scholarly journals Crystal structure ofcis-aquabis(2,2′-bipyridine-κ2N,N′)chloridochromium(III) tetrachloridozincate determined from synchrotron data

2016 ◽  
Vol 72 (3) ◽  
pp. 280-282 ◽  
Author(s):  
Dohyun Moon ◽  
Keon Sang Ryoo ◽  
Jong-Ha Choi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Water Molecule ◽  
Chloride Anion ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Bond Lengths ◽  
Distorted Octahedral

The structure of the title salt, [CrCl(C10H8N2)2(H2O)][ZnCl4], has been determined from synchrotron data. The CrIIIion is coordinated by four N atoms from two 2,2′-bipyridine (bipy) ligands, one O atom from a water molecule and a chloride anion in acisarrangement, displaying a distorted octahedral geometry. The tetrahedral [ZnCl4]2−anion is slightly distorted owing to its involvement in O—H...Cl hydrogen bonding with the coordinating water molecule. The Cr—N(bipy) bond lengths are in the range 2.0485 (13)–2.0632 (12) Å, while the Cr—Cl and Cr—(OH2) bond lengths are 2.2732 (6) and 1.9876 (12) Å, respectively. In the crystal, molecules are stacked along theaaxis.

scholarly journals Bis(μ-2-hydroxymethyl-2-methylpropane-1,3-diolato)bis[dichloridotitanium(IV)] diethyl ether disolvate

2013 ◽  
Vol 69 (12) ◽  
pp. m676-m677
Author(s):  
Alastair J. Nielson ◽  
Chaohong Shen ◽  
Joyce M. Waters
Keyword(s):  
Bond Length ◽  
Diethyl Ether ◽  
Solvent Molecule ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Tripodal Ligand ◽  
Oh Groups ◽  
Bond Lengths ◽  
Distorted Octahedral

The title complex, [Ti2Cl4{CH3C(CH2O)2(CH2OH)}2], lies across a centre of symmetry with a diethyl ether solvent molecule hydrogen bonded to the –CH2OH groups on either side of it. The TiIVatom is coordinated in a distorted octahedral geometry by a tripodal ligand and two terminal chloride atoms. There are three coordination modes for the tripodal ligand distinguishable on the basis of their very different Ti—O bond lengths. For the terminal alkoxo ligand, the Ti—O distance is 1.760 (1) Å, the asymmetric bridge system has Ti—O bond lengths of 1.911 (1) and 2.048 (1) Å. The Ti—O bond length for the alcohol O atom is the longest at 2.148 (1) Å.

scholarly journals Bis{μ-2-[3-carboxylatomethyl-4-(phenylsulfanyl)phenyl]propanoato-κ4O,O′:O′′,O′′′}bis[(2,2′-bipyridine-κ2N,N′)cadmium]

2012 ◽  
Vol 68 (4) ◽  
pp. m511-m511
Author(s):  
Long Li ◽  
Yu-Qiu Ding ◽  
Kai-Sheng Diao
Keyword(s):  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Distorted Octahedral ◽  
Bipyridine Ligand

In the title complex, [Cd2(C17H14O4S)2(C10H8N2)2], which was hydrothermally synthesized, the CdIIcation is hexacoordinated in a distorted octahedral geometry by two N atoms from a 2,2′-bipyridine ligand and by four O atoms from two different 2-[3-carboxylatomethyl-4-(phenylsulfanyl)phenyl]propanoate ligands, forming a cyclic dimetallic complex.

The Crystal and Molecular-Structure of Two Complexes of Cobalt(III) With Pentaaza Macrocyclic Ligands Chloro (1,4,7,10,14-pentaazacycloheptadecane)cobalt(III) Bromide Chloride Hydrate [Co(C12H29N5)Cl] (Br0.33Cl1.67)H2O and Bromo(1,4,7,11,15-pentaazacyclooctadecane)cobalt(III) Bromide [Co(C13H31N5)Br]Br2

1987 ◽  
Vol 40 (5) ◽  
pp. 829 ◽  
Author(s):  
NF Curtis ◽  
GJ Gainsford ◽  
P Osvath ◽  
DC Weatherburn
Keyword(s):  
Chelate Ring ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Boat Conformation ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Membered Chelate Ring ◽  
Ligand Interactions ◽  
Chloride Hydrate ◽  
Chelate Rings

The structures of the compounds chloro (1,4,7,10,14-pentaazacycloheptadecane) cobalt(III) bromide chloride hydrate, [Co( chad )Cl] ( Br0.33Cl1.67)H2O(1) and bromo (1,4,7,11,15-pentaazacyclooctadecane) cobalt(III) bromide, [Co( coad )Br]Br2(2),have been determined by X-ray diffractometry. [Compound (1) orthorhombic, space group P bac, a 1208.5, b 2305.5, c 1318.9 pm, Z 8, R 0.056, Rw 0.071 for 1943 reflections. Compound (2), triclinic, space group P1, a 930.8, b 953.5, c 1120.3pm, α 84.60,β 398.82, γ 105.26�, Z 2, R 0.045, RW0.054 for 4821 reflections.] The compounds have structures with two ( chad ) or three ( coad ) six-membered chelate rings in the equatorial (N4) plane, but with different configurations of the chiral nitrogen centres ; chad : 1SR , 4SR, 7RS, 10RS, that is, with only the NH group at the junction of the two six-membered chelate rings on the same side of the N4 plane as the axial nitrogen; coad : 1 RS, 7SR, 11 SR, 15RS, that is, with NH groups of the central six-membered chelate ring on the same side of the N4 plane as the axial nitrogen, and the others on the opposite side. The chad compound has regular octahedral geometry, with one chair and one boat conformation six-membered chelate ring. The coad compound has distorted octahedral geometry, with long Co-N distances in the N4 plane, attributed to intra-ligand interactions.

The Crystal Structures of [N,N’-Bis(3-methoxysalicylidene)-1,3- diaminopropane]nickel(II) and -copper(II)

2004 ◽  
Vol 59 (2) ◽  
pp. 228-232 ◽  
Author(s):  
Ayhan Elmali ◽  
Celal T Zeyrek ◽  
Yalcin Elerman
Keyword(s):  
Crystal Structures ◽  
Mirror Symmetry ◽  
Distorted Octahedral Geometry ◽  
Planar Geometry ◽  
Water Molecules ◽  
Monoclinic Space Group ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Bond Lengths ◽  
Distorted Octahedral

[N,N′’-Bis(3-methoxysalicylidene)-1,3-diaminopropane]nickel(II) dihydrate [Ni(C19H20N2O4)· 2(H2O)] 1 and [N,N′-bis(3-methoxysalicylidene)-1,4-diaminobutane]copper(II) [Cu(C20H22N2O4)] 2 have been synthesized and their crystal structures determined. Crystals of compound 1 are orthorhombic, space group Pnma, a = 7.509(3), b = 22.070(7), c = 11.532(4) Å, V = 1611.1(12) Å3, Z = 4 and Dc = 1.498 g·cm−3. The molecule 1 has mirror symmetry, but the ligand is not planar. The two parts of the Schiff base moieties are folded so as to form an angle of 21.6(1)°. The Ni atom is in a distorted octahedral geometry and coordinated by the donor atoms of the ligand in the horizontal plane and of two water molecules. Crystals of compound 2 are monoclinic, space group P21/c, a = 9.488(1), b = 21.918(3), c = 8.413(1) Å, β = 91.45(1)°, V = 1749.0(4) Å3, Z = 4 and Dc = 1.587 g·cm−3. The Cu atom is coordinated by an N2O2 donor set from the imine-phenol ligand in a distorted planar geometry, with the two phenolate O atoms deprotonated. The Cu-O bond lengths are 1.854(3) and 1.868(3)Å . The Cu-N bond lengths are 1.931(3) and 1.950(3) Å, the dihedral angle between the two 3-methoxysalicylidene groups is 43.4(1)°.

scholarly journals Dicarbonyl(η5-cyclopentadienyl)(hexamethylenetetramine-κN1)iron(II) tetrafluoridoborate

2012 ◽  
Vol 68 (8) ◽  
pp. m1077-m1077
Author(s):  
Cyprian M. M'thiruaine ◽  
Holger B. Friedrich ◽  
Bernard Omondi
Keyword(s):  
Title Compound ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Asymmetric Unit ◽  
Apical Position ◽  
Bond Lengths ◽  
Coordination Sites ◽  
Cyclopentadienyl Ligand ◽  
Distorted Octahedral

In the structure of the title compound, [Fe(C5H5)(C6H12N4)(CO)2]BF4, the arrangement around the FeIIatom corresponds to that of a three-legged piano stool. The cyclopentadienyl ligand occupies three coordination sites of the apical position in a η5fashion, while two CO ligands and one N atom of the hexamethylenetetramine ligand occupy the remaining coordination sites to complete a distorted octahedral geometry. The asymmetric unit consists of two sets of crystallographically independent cations and anions with the r.m.s. deviations of the overlay of non-H atoms of each pair being 0.081 and 0.120 Å, respectively. The Fe—N bond lengths are 2.0459 (15) and 2.0490 (14) Å, while the Fe—Cp(centroid) distances are 1.7257 (3) and 1.7246 (3) Å. One of the anions displays disorder, with the F atoms having occupancies of 0.58 (4) and 0.42 (4).

Platinum–Tin Bonded Complexes, Including a Structural Analysis of the Octahedral Tris(pyrazol-1-yl)borate Complex Pt(SnMe3)Me2{(pz)3BH-N,N',N"}

1999 ◽  
Vol 52 (5) ◽  
pp. 417 ◽  
Author(s):  
Allan J. Canty ◽  
Hong Jin ◽  
Brian W. Skelton ◽  
Allan H. White
Keyword(s):  
Structural Analysis ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Methyl Group ◽  
Trans Influence ◽  
Distorted Octahedral ◽  
Borate Complex ◽  
Group A ◽  
Group 2 ◽  
Related Complex

The platinum(II) complex K[PtMe2 {(pz)3BH-N,N′}] reacts with SnCl2Me2 to form Pt(SnClMe2)Me2- {(pz)3BH-N,N′ ,N″} ([(pz)3BH]–=tris(pyrazol-1-yl)borate). The closely related complex Pt(SnMe3)Me2- { (pz)3BH-N,N′ ,N″ } has distorted octahedral geometry for platinum with Pt–Sn 2·5727(8) Å . The Pt–N distance trans to the SnMe3 group [2·237(7) Å] is longer than those trans to the Me groups [2·127(7) and 2·131(6) Å], indicating for the trimethylstannyl group a trans influence which is higher than that for the methyl group.

scholarly journals Bis[trans-difluoridotetrakis(pyridine-κN)chromium(III)] sodium tetrachloridozincate perchlorate from synchrotron data

2014 ◽  
Vol 70 (7) ◽  
pp. m280-m280 ◽  
Author(s):  
Dohyun Moon ◽  
Keon Sang Ryoo ◽  
Jong-Ha Choi
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Bond Lengths ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral ◽  
The Mean ◽  
Supramolecular Chains

The title salt, Na[CrF2(C5H5N)4]2[ZnCl4]ClO4, consists of two cationic CrIIIcomplexes, an Na+cation, one [ZnCl4]2−anion and one ClO4−anion. The CrIIIatoms are coordinated by four pyridine (py) N atoms and two F atoms in atransarrangement, displaying a distorted octahedral geometry. The mean Cr—N(py) and Cr—F bond lengths are 2.086 (8) and 1.864 (14) Å, respectively. The [ZnCl4]2−anion has a distorted tetrahedral geometry. The most notable feature of the crystal packing is the formation of weak pyridine–perchlorate C—H...O hydrogen bonds, resulting in supramolecular chains along theb-axis direction. The perchlorate anion was disordered over two sets of sites in a 0.868 (3):0.132 (3) ratio.

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