(2,2-Dimethyl-α,α,α′,α′-tetraphenyl-1,3-dioxolane-4,5-dimethanolato-κ2 O 4,O 5)ethyl(tetrahydrofuran-κO)aluminium(III)

2007 ◽  
Vol 63 (11) ◽  
pp. m2665-m2666
Author(s):  
Chien-An Chen ◽  
Kuo-Hui Wu ◽  
Han-Mou Gau
Keyword(s):  
Metal Atom ◽  
Title Compound ◽  
Bond Angle ◽  
Membered Ring ◽  
Metal Centre ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Tetrahedral Angle ◽  
The Ideal

The title compound, [Al(C2H5)(C31H28O4)(C4H8O)], has a slightly distorted tetrahedral geometry around the AlIII metal centre. The bidentate TADDOLate ligand and the AlIII metal atom form a seven-membered ring, with an O—Al—O angle of 111.19 (10)°, which is close to the ideal tetrahedral angle. The Al—O—C(alkoxide) angles of 139.17 (17) and 137.95 (17)° are larger than the sp 3 bond angle, suggesting substantial π-donation of the alkoxide O atom to the AlIII metal centre.

scholarly journals N-(3,5-Dimethylphenyl)-P,P-diphenylphosphinic amide

IUCrData ◽  
2018 ◽  
Vol 3 (8) ◽  
Author(s):  
Niloufar Khojandi ◽  
Nigam P. Rath ◽  
Myron W. Jones
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Molecular Conformation ◽  
Bond Angle ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Compound C ◽  
Tetrahedral Bond ◽  
The Ideal

In the title compound, C20H20NOP, the P atom, with a distorted tetrahedral geometry, is attached to an O atom, two phenyl groups, and a 3,5-dimethylaniline group. The N—P—C [102.29 (12) and 108.97 (12)°] and C—P—C [107.14 (12)°] bond angles are all smaller than the ideal 109.5° tetrahedral bond angle, whereas the O—P—C [113.07 (12) and 110.62 (12)°] and O—P—N [114.24 (13)°] angles are all larger than 109.5°. A weak intramolecular C—H...O hydrogen bond helps to establish the molecular conformation. In the crystal, the molecules are linked by N—H...O hydrogen bonds, generating [001] chains.

scholarly journals Crystal structure of bis[μ-1,4-bis(diphenylphosphanyl)butane-κ2P:P′]bis[(3,4,7,8-tetramethyl-1,10-phenanthroline-κ2N,N′)copper(I)] bis(hexafluoridophosphate) dichloromethane disolvate

2016 ◽  
Vol 72 (11) ◽  
pp. 1554-1556
Author(s):  
Michihiro Nishikawa ◽  
Kotaro Mutsuura ◽  
Taro Tsubomura
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Membered Ring ◽  
Inversion Symmetry ◽  
Tetrahedral Geometry ◽  
Π Interactions ◽  
Distorted Tetrahedral Geometry ◽  
Phenanthroline Ligand

The dication of the title compound, [Cu2(C28H28P2)2(C16H16N2)2](PF6)2·2CH2Cl2, has crystallographically imposed inversion symmetry. The copper(I) cation is coordinated in a distorted tetrahedral geometry by two N atoms of a chelating 3,4,7,8-tetramethyl-1,10-phenanthroline ligand and two P atoms of two bridging 1,4-bis(diphenylphosphanyl)butane ligands, forming a 14-membered ring. An intramolecular π–π interaction stabilizes the conformation of the dication. In the crystal, dications are linked by π–π interactions involving adjacent phenanthroline rings, forming chains running parallel to [111]. Weak C—H...F hydrogen interactions are also observed.

scholarly journals catena-Poly[2-methylpyridinium [tungstate-di-μ-selenido-silver-di-μ-selenido] 2-methylpyridine monosolvate]

2013 ◽  
Vol 69 (11) ◽  
pp. m608-m608
Author(s):  
Lu-Jun Zhou ◽  
Hua-Tian Shi ◽  
Chao Xu ◽  
Qun Chen ◽  
Qian-Feng Zhang
Keyword(s):  
Hydrogen Bonding ◽  
Metal Atom ◽  
Title Compound ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Polymeric Chain ◽  
Tetrahedral Geometry ◽  
Axis Direction ◽  
Distorted Tetrahedral Geometry ◽  
Compound C

The title compound, {(C6H8N)[AgWSe4]·C6H7N}n, consists of anionic [WAgSe4]nchains, 2-methylpyridinium cations and neutral 2-methylpyridine molecules. The Se atoms bridge the Ag and W atoms, forming a polymeric chain extending along theb-axis direction. Both the Ag and W atoms are located on a twofold rotation axis and each metal atom is coordinated by four Se atoms in distorted tetrahedral geometry. In the crystal, the 2-methylpyridinium cation and 2-methylpyridine molecule are linkedviaN—H...N hydrogen bonding. Weak C—H...Se interactions link the organic components and polymeric anions into a three-dimensional architecture.

scholarly journals Crystal structure of dibenzyldimethylsilane

2015 ◽  
Vol 71 (6) ◽  
pp. o391-o392
Author(s):  
Lena Knauer ◽  
Christopher Golz ◽  
Ulrike Kroesen ◽  
Stephan G. Koller ◽  
Carsten Strohmann
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Bond Angle ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Compound C ◽  
Tetrahedral Angle ◽  
Ideal Tetrahedron ◽  
Bent’S Rule ◽  
The Ideal

In the title compound, C16H20Si, a geometry different from an ideal tetrahedron can be observed at the Si atom. The bonds from Si to the benzylic C atoms [Si—C = 1.884 (1) and 1.883 (1) Å] are slightly elongated compared to the Si—Cmethylbonds [Si—C = 1.856 (1) and 1.853 (1) Å]. The Cbenzyl—Si—Cbenzylbond angle [C—Si—C = 107.60 (6)°] is decreased from the ideal tetrahedral angle by 1.9°. These distortions can be explained easily by Bent's rule. In the crystal, molecules interact only by van der Waals forces.

Bis[4-fluoro-N-(quinolin-8-yl)benzenesulfonamidato-κ2 N,N′]zinc(II) hemihydrate

2006 ◽  
Vol 62 (7) ◽  
pp. m1719-m1721 ◽  
Author(s):  
Luiz Everson da Silva ◽  
Antonio Carlos Joussef ◽  
Sabine Foro ◽  
Boris Schmidt
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Three Dimensional ◽  
Tetrahedral Geometry ◽  
Special Position ◽  
Twofold Axis ◽  
Distorted Tetrahedral Geometry ◽  
Dimensional Network

In the title compound, [Zn(C15H10FN2O2 S)2]·0.5H2O, the Zn atom has a distorted tetrahedral geometry, formed by the N atoms of the quinoline and the sulfonamide groups. The water molecule occupies a special position on a twofold axis. Intermolecular C—H...O hydrogen bonds to the sulfonyl O atoms link the molecules into a three-dimensional network.

scholarly journals 4-Methyl-2-(2-nitrobenzenesulfonamido)pentanoic acid

2012 ◽  
Vol 68 (8) ◽  
pp. o2573-o2573 ◽  
Author(s):  
Muhammad Nadeem Arshad ◽  
Muhammad Danish ◽  
Muhammad Nawaz Tahir ◽  
Savera Khalid ◽  
Abdullah M. Asiri
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Aromatic Ring ◽  
Title Compound ◽  
Pentanoic Acid ◽  
Isopropyl Group ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Compound C

In the title compound, C12H16N2O6S, the S atom adopts a distorted tetrahedral geometry with an O—S—O angle of 119.76 (13)°. The nitro group is twisted by 35.34 (2)° with respect to the aromatic ring; it accepts an N—H...O hydrogen bond, resulting in aS(7) motif. In the crystal, N—H...O and O—H...O hydrogen bonds connect the molecules into an infinite chain along theaaxis. The methyl C atoms of the isopropyl group are disordered in a 1:1 ratio.

scholarly journals Poly[hydrazin-1-ium [diaquabis(μ4-pyridazine-3,6-dicarboxylato)trilithate] monohydrate]

2012 ◽  
Vol 68 (4) ◽  
pp. m496-m497 ◽  
Author(s):  
Wojciech Starosta ◽  
Janusz Leciejewicz
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Water Molecules ◽  
Extended System ◽  
Tetrahedral Geometry ◽  
Crystal Water ◽  
Distorted Tetrahedral Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The structure of the title compound, {(N2H5)[Li3(C6H2N2O4)2(H2O)2]·H2O}n, is composed of molecular dimers, each built up of two symmetry-related LiIions with distorted trigonal–bipyramidal coordinations bridged by two deprotonated ligand moleculesviatheirN,O-bonding sites. Doubly solvated LiIions with a distorted tetrahedral geometry link adjacent dimers, forming a polymer generated by bridging bidentate carboxylato O atoms to LiIions in adjacent dimers, forming anionic layers parallel to theacplane with monoprotonated hydrazinium cations and crystal water molecules positioned between them. The layers are held together by an extended system of hydrogen bonds in which the hydrazinium cations and coordinated and crystal water molecules act as donors and carboxylate O atoms act as acceptors.

scholarly journals [N,N′-Bis(2,6-diethyl-4-phenylphenyl)butane-2,3-diimine-κ2N,N′]dibromidonickel(II)

2014 ◽  
Vol 70 (3) ◽  
pp. m102-m102
Author(s):  
Jianchao Yuan ◽  
Jingjing Xia ◽  
Weibing Xu ◽  
Yanqiong Mu
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Mirror Symmetry ◽  
Complex Molecule ◽  
Mirror Plane ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Benzene Rings ◽  
Diimine Ligand

The complex molecule in the title compound, [NiBr2(C36H40N2)], has mirror symmetry. The NiIIatom and two Br atoms are located on the mirror plane. The NiIIatom is four-coordinated by the two Br atoms and two N atoms from anN,N′-bis(2,6-diethyl-4-phenylphenyl)butane-2,3-diimine ligand in a distorted tetrahedral geometry. The dihedral angle formed between the two adjacent benzene rings is 47.1 (1)°.

scholarly journals Bis(2-amino-3-methylpyridine-κN1)dichloridomercury(II)

2012 ◽  
Vol 68 (8) ◽  
pp. m1099-m1099 ◽  
Author(s):  
Azadeh Tadjarodi ◽  
Keyvan Bijanzad ◽  
Behrouz Notash
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Rotation Axis ◽  
Complex Molecule ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry

In the title compound, [HgCl2(C6H8N2)2], the two independent HgIIcations are each located on a twofold rotation axis and coordinated by two pyridine N atoms from two 2-amino-3-methylpyridine ligands and two Cl−anions in a distorted tetrahedral geometry. An intramolecular N—H...Cl hydrogen bond occurs in each independent complex molecule. Intermolecular N—H...Cl hydrogen bonds occur in the crystal structure.

scholarly journals Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2S,S′]triphenyltin(IV)

2018 ◽  
Vol 74 (3) ◽  
pp. 302-308 ◽  
Author(s):  
Rapidah Mohamad ◽  
Normah Awang ◽  
Nurul Farahana Kamaludin ◽  
Mukesh M. Jotani ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structures ◽  
Metal Atom ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Molecular Structures ◽  
Site Symmetry ◽  
Tetrahedral Geometry ◽  
Twofold Axis ◽  
Distorted Tetrahedral Geometry ◽  
Crystal And Molecular Structures

The crystal and molecular structures of the two title organotin dithiocarbamate compounds, [Sn(C4H9)2(C7H14NO2S2)2], (I), and [Sn(C6H5)3(C5H10NOS2)], (II), are described. Both structures feature asymmetrically bound dithiocarbamate ligands leading to a skew-trapezoidal bipyramidal geometry for the metal atom in (I) and a distorted tetrahedral geometry in (II). The complete molecule of (I) is generated by a crystallographic twofold axis (Sn site symmetry 2). In the crystal of (I), molecules self-assemble into a supramolecular array parallel to (10-1)viamethylene-C—H...O(methoxy) interactions. In the crystal of (II), supramolecular dimers are formedviapairs of weak phenyl-C—H...π(phenyl) contacts. In each of (I) and (II), the specified assemblies connect into a three-dimensional architecture without directional interactions between them. Hirshfeld surface analyses confirm the importance of H...H contacts in the molecular packing of each of (I) and (II), and in the case of (I), highlight the importance of short methoxy-H...H(butyl) contacts between layers.

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