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1.
The structure of diaquobis--(dimethylsulfoxo)bis(dimethylsulfoxo)dilithium tetraphenyl- borate, [Li2(Me2SO)4(H2O)2][BPh4]2, has been determined at 293 K. The compound crystallizes in the triclinic P-1 space group (a = 11.429(2) Å, b = 14.068(3) Å, c = 19.215(4) Å, = 69.31(3), = 88.98(3), = 89.03(3)). The lithium is coordinated to the oxygens of an aquo ligand, a terminal dimethylsulfoxo ligand, and two bridging dimethylsulfoxo ligands. The coordination geometry of each lithium is significantly distorted from a tetrahedron by the twisting of the plane containing the lithium ion and the two bridging dimethylsulfoxo oxygens relative to the plane containing the lithium ion and the terminal dimethylsulfoxo and aquo oxygen atoms. Hydrogen bonding between the aquo hydrogens and the phenyls of the tetraphenylborate anion is observed but does not result in a polymeric structure as has been observed in other lithium tetraphenylborate salts because of the 1:1 ratio of aquo ligands and tetraphenylborate anions. 相似文献
2.
Khalil J. Asali Tino Ladogana Simon G. Bott Gerard R. Dobson 《Journal of chemical crystallography》2003,33(9):701-704
The title compound crystallizes in the centrosymmetric triclinic unit cell, a = 6.6662(8) Å, b = 8.8584(6) Å, c = 13.574(2) Å, = 71.468(7)°, = 82.182(9)°, = 75.270(7)°, Z = 1. Refinement converged at R = 0.0396 for 1383 observed reflections. The molecule consists of two W(CO)5 fragments bridged centrosymmetrically by the 2,2,9,9-tetramethyl-3,7-dithiadecane ligand. 相似文献
3.
Ahmad T. Kabbani Michael J. Zaworotko Heba Abourahma Rosa D. Baily Walsh Hassan H. Hammud 《Journal of chemical crystallography》2004,34(11):749-756
The title compound, [Cu2(II)(4-Cl-3-NO2–C6H3CO2)4(CH3OH)2] or [Cu2(4-chloro-3-nitrobenzoate)4(MeOH)2] has been prepared and its structure determined using X-ray crystallography. The complex crystallizes in the triclinic space group P-1 with a = 9.6887(9)Å, b = 10.6448(9)Å, c = 11.4194(10)Å, = 108.094(2), = 110.682(2), = 105.055(2), V = 952.691(15)Å3, and Z = 1. The structure consists of centrosymmetric dimers in which the Cu(II) atoms display a square pyramidal CuO5 coordination, with four carboxylate O atoms in the basal plane [CuO 1.951(2)–1.968(2)Å] and the methanol O atoms in the apical position [CuO 2.170(2)Å]. The Cu atoms are 2.614(1)Å apart and are bridged by four benzoate groups. The discrete dimers are extended into 1D chains that result from hydrogen bonding between the coordinated methanol on one Cu(II) dimer and the nitro substituent on an adjacent Cu(II) dimer. The chains are interdigited and held by – stacking interactions forming 3D supramolecular array. 相似文献
4.
Chun-Gu Xia Simon G. Bott Michael G. Richmond 《Journal of chemical crystallography》2003,33(9):681-687
The triruthenium cluster ( -H)Ru3( 3–3-CHCHCMe)(CO)9 reacts with the diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) in the presence of Me3NO to afford ( -H)Ru3( 3– 3-CHCHCMe)(CO)7(bpcd) in moderate yield. This new cluster has been isolated and characterized in solution by IR and NMR (1H, 31P) spectroscopies, and the solid-state structure has been established by X-ray crystallography. ( -H)Ru3( 3– 3-CHCHCMe)(CO)7(bpcd) MeOH crystallizes in the triclinic space group P
, a = 11.2426(8) Å, b = 11.7141(8) Å, c = 16.195(1) Å, = 102.041(5)°, = 95.128(5)°, = 102.553(6)°, V = 2008.4(3) Å3, Z = 2, d
calc. = 1.733 g/cm3; R = 0.0488, R
w = 0.0546 for 2212 observed reflections with I > 3 (I). The X-ray structure reveals that the bpcd ligand is bound exclusively to the Ru3 core at the ruthenium center coordinated by the terminal CH unit of the -allylic 3– 3-CHCHCMe moiety. 相似文献
5.
The crystal and molecular structure of catena-[(-acetato) (-phthalazine)-silver(I)dihydrate], {[Ag(O2CCH3) (C8H6N2)(H2O)2]2}n, has been determined by single crystal X-ray analysis: the space group is P21/n,a=16.150(8) Å,b=3.886(5) Å,c=18.716(9) Å, =96.02(5)°,V=1168 Å3. Phthalazine (PHZ) bridges the silver atoms to form {Ag--PHZ]2 dimeric subunits. These dimeric subunits are planar and stack by bridging acetates to form a polymeric lattice. The acetates also form an asymrnetric chelate ring with the silver atoms which result in a distorted, square pyramidal configuration. The complex is further characterized by its IR and thermal properties. 相似文献
6.
It has been previously reported that dimeric compounds of the general formula [L3Cu(II)]2(-Cl)2 exhibit a correlation between their magnetic coupling constantJ and the bridging Cu-Cl-Cu angle. A full survey of the published structural and magnetic data on these compounds confirms this correlation but leads to the conclusion that its physical significance is questionable. EHMO calculations on Cu2Cl
8
4–
and its bromo analog show that the molecular orbitals responsible for the magnetic behavior of the dimers are not the orbitals responsible for the bonding interactions in these dimers. Therefore, they are very weakly affected by variations of the molecular structure, and no significant correlation betweenJ and any of the structural parameters is theoretically predicted. However, this situation changes when the coordination around the Cu atoms is strongly and dissymmetrically pyramidalized. 相似文献
7.
Mohammad R. Hasan Michael B. Hursthouse Shariff E. Kabir K.M. Abdul Malik Edward Rosenberg Tasneem A. Siddiquee 《Journal of chemical crystallography》1999,29(5):597-602
The reaction of [Ru3(CO)10(-dppm)] 1 with PPhCl2 in refluxing CHCl3 results in the isolation of [(-H)Ru3(CO)8(-Cl)(-dppm)] 3 in 10% yield. Compound 3, which has been structurally characterized by crystallographic methods, is also formed from the reaction of 1 with H2 in refluxing CCl4. The compound crystallizes in the monoclinic space group P21/c with a = 16.814(2), b = 18.7590(12), c = 11.486(2) Å, = 97.745(11)°, V = 3589.8(8) Å3, and Z = 4. The hydride and chloride ligands bridge the same edge of the triruthenium cluster as the dppm ligand. 相似文献
8.
William H. Watson Miguel A. Mendez-Rojas Yuxin Zhao Michael G. Richmond 《Journal of chemical crystallography》2003,33(10):765-774
Treatment of the azavinylidene-bridged cluster Ru3(-H)(-N=CPh2)(CO)10 (1) with the diphosphine ligand bis(dimethylphosphino)ethane (dmpe) gives Ru3( -H)(-N=CPh2)(CO)8(dmpe) (2) in moderate yield, while the ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) reacts with Ru3( -H)(-N=CPh2)(CO)10 in the presence of Me3NO to furnish Ru3( -H)(-N=CPh2)(CO)8(bpcd) (3) in low yield. Each new cluster has been isolated and characterized in solution by IR and NMR (1H and 31P) spectroscopies, and the coordination mode exhibited by the ancillary diphosphine ligand in 2 and 3 has been established by X-ray crystallography. Ru3( -H)(-N=CPh2)(CO)8(dmpe) crystallizes in the monoclinic space group P2(1)/c, a = 10.791(1) Å, b = 16.377(1) Å, c = 18.148(1) Å, = 96.675(2)°, V = 3185.3(4) Å3, Z = 4, D
cacl = 1.791 Mg/m3; R = 0.0360, R
w
= 0.0866 for 7522 observed reflections with I > 2(I). Ru3(-H)(-N=CPh2)(CO)8(bpcd) crystallizes, as the CH2Cl2 solvate, in the triclinic space group
, a = 11.956(1) Å, b = 14.228(1) Å, c = 31.409(3) Å, = 89.377(2)°, = 79.344(2)°, = 77.235(2)°, V = 5118.4(8) Å3, Z = 2, D
calc = 1.670 Mg/m3; R = 0.0557, R
w
= 0.1069 for 10977 observed reflections with I > 2(I). The structural details of clusters 2 and 3 are contrasted with Ru3(-H)(-N=CPh2)(CO)7(-dppm)(-dppm), which is the only known structurally characterized phosphine-substituted cluster of this genre. 相似文献
9.
Luigi Pietro Battaglia Anna Bonamartini Corradi Maria Antonietta Zoroddu 《Journal of chemical crystallography》1990,20(2):161-164
The synthesis, magnetic, and structural properties of the title compound are reported. The crystals are triclinic, space groupP¯1, witha=15.084(2),b=11.820(1),c=7.5253(7) Å, =71.50(1),=77.61(1), =68.68(1)° andZ=1; the structure was solved by Patterson and Fourier methods and refined toR 0.0351 for 4147 observed reflections. The content of the unit cell consists of a centrosymmetrical copper acetate-like molecule in which each copper can be described as square-pyramidally surrounded by four carboxylic oxygens in the basal plane [1.955(2)–1.970(2) Å], one methanolic oxygen in the apical site [2.206(2) Å] and a CuCu interaction of 2.612(5) Å at a sixth position of a distorted octahedron. The dimers are packed by means of hydrogen bonds formed between the methanolic OH group and the carboxylic O(2) atom of one adjacent complex and by normal Van der Waals contacts. The subnormal magnetic moment, characteristic of exchange interactions between the two copper(II) ions, and the energy of the d-d band observed are consistent with the reported dinuclear copper(II) acetate-like structure. 相似文献
10.
Robin D. Rogers Andrew H. Bond Salvador Aguinaga 《Journal of chemical crystallography》1993,23(11):857-862
The reaction of equal millimolar quantities of CdBr2 and 2-hydroxyethyl sulfide in 31 CH3CNCH3OH produced [Cd(OH2)2(Br)4 (Cd(2-hydroxy ethyl sulfide) (-Br))2]n. The compound crystallizes as a bromide-bridged polymer with hydrogen bonding interactions between the polymeric chains. Each of the two unique metal centers has a distorted octahedral geometry. The thioether ligand is bidentate to one cadmium position with one alcoholic terminus uncoordinated. The uncoordinated portion of the molecule is disordered with each conformation participating in slightly different hydrogen bonding environments. The other unique cadmium center is coordinated to four bridging bromides and twotrans water molecules. 相似文献
11.
Crystals of [Co(C2H8N2)2(C3H6NO2)]PbCl4 · H2O [a = 7.627(1) Å, b = 11.238(1) Å, c = 11.444(1) Å, α = 99.125(1)°, β = 103.80(1)°, γ = 94.739(1)°, V = 933.09(1) Å3, Z = 2, and space group $P\bar 1$ ] contain the octahedral PbCl6 groups that share edges to form infinite [Cl2Pb(μ-Cl)2] n 2n chains, in which the terminal Cl atoms occupy the cis positions. The Pb-Cl bond lengths are 2.763(1)–3.180(3) Å. In the discrete cationic complexes, the Co atom is coordinated by two ethylenediamine molecules and the 3-aminopropionate anion. In the enantiomeric complex with the Δ absolute configuration, the ethylenediamine rings have the λ and δ configurations and the aminopropionate ring has the λ configuration. 相似文献
12.
William H. Watson Jie Liu Michael G. Richmond 《Journal of chemical crystallography》2005,35(3):249-258
The reaction of the terminal alkyne methyl propiolate with the heterometallic dimers CoRu(CO)7(μ-PPh2) (1) and CoRu(CO)5[(Z)-Ph2PCH=CHPPh2](μ-PPh2) (2) has been investigated at 65°C in toluene. In the reaction of 1, chromatographic purification afforded a minor band, from which the two species RuCo(CO)4(μ-CO)[μ-PPh2C(O)CHC(CO2Me)] and RuCo(CO)4(μ-CO)[μ-PPh2CHC(CO2Me)] were observed by 1H NMR spectroscopy, and one major band, whose 1H NMR spectrum revealed the presence of multiple species. The identity of one of the compounds in the major component has been established as that of CoRu(CO)4(μ-CO)[μ-PPh2C(O)CH(CCO2Me)C(O)CHC(CO2Me)] (3) by X-ray diffraction analysis. The solid-state structure of 3 confirms the double insertion of CO and head-to-head coupling of the methyl propiolate that accompanies the formation of this product. Compound 3 crystallizes in the triclinic space group P-1, a = 8.4035(4), b = 9.6721(5), c = 17.678(1) Å, α = 94.135(2), β = 103.318(2), γ = 101.336(2)°, V = 1360.5(1) Å3, Z = 2, D calc = 1.732 Mg/m3; R = 0.0300, R w = 0.0760 for 8630 reflections with I > 2σ(I). The ruthenium-bound diphosphine ligand in 2 exerts a controlling influence on the reaction with added alkyne insomuch as only the mono-insertion product CoRu(CO)3(μ-CO)[(Z)-Ph2PCH=CHPPh2][μ-PPh2C(O)C(CO2Me)CH] (4) is formed as a single regioisomer. The molecular structure of 4 was established by X-ray diffraction analysis and 4 was found to crystallize in the monoclinic space group P21/c, a = 19.483(7), b = 11.905(4), c = 20.131(7) Å, β = 110.455(6)°, V = 4375(3) Å3, Z = 4, D calc = 1.466 Mg/m3; R = 0.0961, R w = 0.1683 for 6262 reflections with I > 2σ(I). The reactivity of methyl propiolate with 1 and 2 is compared with the known reactivity that has been reported for other alkynes. 相似文献
13.
Kazi A. Azam Anjoli R. Das Michael B. Hursthouse Shariff E. Kabir K. M. Abdul Malik 《Journal of chemical crystallography》1998,28(4):283-288
The reaction of [Os3(CO)10(MeCN)2] with 2-ethylpyridine at ambient temperature leads to the isolation of the cluster [(-H)Os3(CO)10(-2-N=CCH=CHCH=CC2H5)][3 (65% yield) which has been structurally characterized by crystallographic methods. The compound crystallizes in the triclinic space group
with a = 9.334(2), b = 9.918(2), c = 11.767(1) Å, = 92.13(2), = 99.93(1), = 99.88(2)°, V = 1054.7(3) Å3 and Z = 2. The same edge of the osmium triangle in the cluster is bridged by both the hydrido and the heterocyclic ligands, the latter through the nitrogen and the carbon atoms of the C=N bond. 相似文献
14.
Andrea M. Goforth Mark D. Smith Hans-Conrad zur Loye 《Journal of chemical crystallography》2003,33(4):303-306
The two-dimensional coordination polymer [Cu2
i
2(pyz)]n (where pyz = pyrazine) has been synthesized hydrothermally and structurally characterized by single crystal X-ray diffraction analysis. [Cu2
i
2(pyz)]n crystallizes in the space group P
with a = 4.1759(4) Å, b = 7.1281(7) Å, c = 8.1279(8) Å, = 109.607(2), = 101.769(2), = 96.676(2), and Z = 1. The sheet-like polymer is characterized by infinite stair step [Cu2
i
2]n double chains connected in two dimensions through bridging pyrazine ligands. The coordination environment about each copper is approximately tetrahedral having three Cu–I bonds and a single Cu–N bond. 相似文献
15.
Michael P. Castellani William G. Smith Nimish G. Patel Simon G. Bott Michael G. Richmond 《Journal of chemical crystallography》1999,29(5):609-617
The reaction between the tricobalt cluster Co3(CO)9(3-CCl) (1) and AlCl3, followed by treatment with ethyl diazoacetate, N2CHCO2Et, affords a complex mixture of products in low yields. Column chromatography has allowed the isolation of the four cluster compounds Co3(CO)9(3-CH) (2), Co3(CO)9(3-CCO2Et) (3), Co3(CO)9(3-CCH2CO2Et) (4), and [Co3(CO)9(3-CCHCO2Et)]2 (5). Clusters 4 and 5 are new and have been fully characterized in solution by IR and 1H NMR spectroscopy. The molecular structures of clusters 3–5 have also been determined by single-crystal X-ray diffraction analysis. Co3(CO)9(3-CCO2Et) crystallizes in the triclinic space group P
, a = 8.8393(5), b = 14.727(1), c = 15.272(1) Å, = 93.361(6), = 105.509(5)°, = 100.336(6)°, V = 1872.6(2) Å3, Z = 4, and d
calc = 1.823 g/cm3. Co3(CO)9(3-CCH2CO2Et) crystallizes in the monoclinic space group P21/n, a = 9.3806(7), b = 9.2617(8), c = 22.455(2) Å, = 94.483(7)°, V = 1944.9(3) Å3, Z = 4, and d
calc = 1.803 g/cm3. [Co3(CO)9(3-CCHCO2Et)]2 crystallizes in the monoclinic space group C2/c, a = 21.585(2), b = 8.7977(7), c = 20.784(1) Å, = 104.807(6)°, V = 3815.8(5) Å3, Z = 4, and d
calc = 1.835 g/cm3. Plausible pathways leading to the formation of clusters 2,
4, and 5 are discussed. 相似文献
16.
Gerard A. van Albada Nora Veldman Anthony L. Spek Jan Reedijk 《Journal of chemical crystallography》2000,30(1):69-72
The title compound, catena-[bis(azido-N)-copper(II)-(bis(2-benzimidazolyl)butane), [Cu(C18H18N4)(N3)2]n, was obtained from the reaction of the ligand bis(2-benzimidazolyl)butane and Cu(N3)2. The x-ray crystal structure is reported. The compound crystallizes in the monoclinic space group P21/c with a = 8.2524(10), b = 12.765(5), c = 9.1125(15) Å, = 106.423(12)°, Z = 2. The Cu(II) ions are square-planar coordinated with trans-oriented end-on binding azido ligands. The structure is a polynuclear chain with the benzimidazole bridging at each end. In addition a N(ligand)-H···N(azido) H-bridge [N(ligand)···N(azido) = 2.994(7) Å] is present, resulting in a pseudo 2-dimensional lattice. The characteristic azido infrared vibrations are found at 2060 and 2077 cm–1 (as(N3)) and 1284 and 1297 cm–1 ((N3)). 相似文献
17.
Xu-Feng Liu 《Molecular Crystals and Liquid Crystals》2016,624(1):257-261
Treatment of (μ-SCH2CH2CH2S-μ)Fe2(CO)6 with equimolar 2-C5H4NPPh2 in the presence of Me3NO·2H2O in CH2Cl2/MeCN solutions gave the title complex (μ-SCH2CH2CH2S-μ)Fe2(CO)5(2-C5H4NPPh2) in 76% yield. The title complex was characterized by spectroscopy as well as by single crystal X-ray diffraction analysis. The molecular structure consists of a butterfly [Fe2S2] cluster with propane, five carbonyls, and 2-C5H4NPPh2. In the crystal packing diagram, intermolecular C–H···O hydrogen bonds between phenyl and carbonyl groups stabilize the solid state. 相似文献
18.
Simon G. Bott Jian Cheng Wang Huafeng Shen Michael G. Richmond 《Journal of chemical crystallography》1999,29(4):391-397
The tetrahedrane cluster, FeCo2(CO)9(3-S), reacts with the redox-active ligand, 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd), to give the disubstituted cluster, FeCo2(CO)7(bpcd)(3-S), as the sole product. This diphosphine-substituted cluster contains a cobalt-bound, chelating bpcd ligand. Both IR and 31P NMR spectroscopies have been employed in the solution characterization of FeCo2(CO)7(bpcd)(3-S), and the solid-state structure has been unequivocally established by X-ray diffraction analysis. FeCo2(CO)7(bpcd)(3-S) crystallizes in the monoclinic space group C2/c, a = 34.494(3) Å, b = 11.4194(9) Å, c = 18.634(2) Å, = 98.103(7)°, V = 7266.7(9) Å3, Z = 8, and dcalc = 1.584 g/cm3. Cyclic voltammetric studies on FeCo2(CO)7(bpcd)(3-S) reveal the presence of two quasireversible redox responses assigned to the 0/1– and 1–/2– redox couples. The orbital composition of these redox couples has been examined by carrying out extended Hückel MO calculations on the model complex FeCo2(CO)7(H4-bpcd)(3-S), with the results being compared to related cluster compounds. 相似文献
19.
William H. Watson Ante Nagl Ming-Jaw Don Michael G. Richmond 《Journal of chemical crystallography》1996,26(1):75-79
The thermal substitution chemistry of the tetracobalt cluster Co4(CO)10(4-PPh)2 with the phosphine ligand PhPMe2 (2.5 equiv) has been explored and found to afford the bis(phosphine)-substituted cluster Co4(CO)8(PPhMe2)2(4-PPh)2 as the major reaction product. The regiochemistry and stereoselectivity exhibited by the two phosphine ligands in Co4(CO)8(PPhMe2)2(4-PPh)2 have been unambiguously established by X-diffraction analysis as having a 1,3-cis orientation. Co4(CO)8(PPhMe2)2(4-PPh)2 crystallizes in the monoclinic space group P21/n,a=10.314(1) Å,b=18.051(3) Å,c=21.313(2) Å, =90.10(1)°,V=3968.0(8) Å3,Z=4,d
calc=1.590 g cm–3;R=0.051,R
w=0.042 for 4987 observed reflections withI>3(I). Generalizations concerning the stereochemical disposition of two P-ligands about the Co4(CO)8P2(4-PPh)2 (where P=phosphine or phosphite) polyhedron are discussed with respect to the cone angle of the P-ligand and its steric interactions with the capping phenylphosphinidene group. 相似文献
20.
Edmund Kwiatkowski Marek Kwiatkowski Urszula Dettlaff-Weglikowska Douglas M. Ho 《Journal of chemical crystallography》1992,22(4):411-419
The products of monocondensation of penta-2,4,-dione with 1,2-diaminoethane, HAE, and with 1,3-diaminopropane, HAT, react with copper nitrate hemipentahydrate to give catena--nitrato (7-amino-5-aza-4-methyl-3-hepten-2-onato) copper(II), [Cu(AE)NO3]n and a mixture of
3-hydroxo-tris (-8-amino-5-aza-4-methyl-3-octen-2-onato) tricopper(II) dinitrate [Cu3(AT)3OH]-(NO3)2 and [Cu(AT)NO3]x, respectively. The structure of [Cu(AE)NO3]n has been determined from 1601 diffractometer data and refined by least squares methods toR=0.0306. The compound crystallizes in the monoclinic space groupP21/a witha=16.856(3)Å,b=8.109(4)Å,c=7.518(3)Å,=90.15(2)°,D
c
=1.725 g cm–3,D
o=1.72 g cm–3 andZ=4. Copper atoms in [Cu(AE)NO3]n are in a 4+1+1* environment and are linked by the pseudobidentate and bridging nitrato group into infinite chains. The structure of [Cu3(AT)3OH](NO3)2 has been determined from 3178 diffractometer data and refined toR=0.0544. The compound crystallizes in the triclinic space groupP¯1 witha=11.918(2)Å,b=14.478(2)Å,c=11.501(3)Å,=98.04(2)°,=117.72(2)°, =99.80(1)°,D
c
=1.580 g cm–3,D
o=1.59 g cm–3 andZ=2. The compound is associated in hexanuclear clusters due to hydrogen bonding interactions. Coordination about Cu is best described as square pyramidal. Magnetic susceptibility data indicate a weak antiferromagnetic exchange within the trinuclear core withJ=–14 cm–1. 相似文献