نتایج جستجو برای: amelia

تعداد نتایج: 745  

2012
Nian-Nian Wang Feng Hu Tai-Ke Duan Qun Chen Qian-Feng Zhang

In the title compound, [Cu(C₂₇H₂₆P₂)₂][GaCl₄], the Cu(I) atom in the complex cation is P,P'-chelated by two 1,3-bis-(diphenyl-phosphan-yl)propane ligands in a distorted tetra-hedral geometry, while the Ga(III) cation is coordinated by four chloride anions in a distorted tetra-hedral geometry. In the crystal, weak C-H⋯π inter-actions occur between adjacent complex cations.

2012
Basem F. Ali Salim F. Haddad Rawhi Al-Far

In the title compound, (C(8)H(12)N)(2)[ZnBr(4)], the coordination geometry of the anion is approximately tetra-hedral. The Zn-Br bond lengths range from 2.3901 (19) to 2.449 (2) Å and the Br-Zn-Br angles range from 107.09 (8) to 112.48 (8)°. In the crystal, each [ZnBr(4)](2-) anion is connected to four cations through two N-H⋯Br and two C-H⋯Br hydrogen bonds, forming two-dimensional ⋯(cation)(2...

2013
Jing Zhu Hui Chen

Rubidium ytterbium(III) tetra-kis-(polyphosphate), RbYb(PO3)4, was synthesized by solid-state reaction. It adopts structure type IV of the MRE(PO3)4 (M = alkali metal and RE = rare earth metal) family of compounds. The structure is composed of a three-dimensional framework made up from double spiral polyphosphate chains parallel to [10-1] and irregular [YbO8] polyhedra. There are eight PO4 tetr...

2012
Benjamin A. Vaughan Anthony E. Wetherby Rory Waterman

The title compound, [Zn(C(19)H(21)N(2))(2)], appears to be the first example of a zinc complex supported by two β-diketiminate (nacnac) ligands. This complex crystallizes with a distorted tetra-hedrally coordinated Zn(II) atom that diposes the two nacnac ligands approximately orthogonally to one another [angle between the two N-Zn-N mean planes is 89.91 (10)°], with average Zn-N bond lengths of...

2012
Zanele H. Phasha Sizwe Makhoba Alfred Muller

In the title mol-ecule, C(10)H(17)PSe, the P atom has a distorted tetra-hedral environment resulting in an effective cone angle of 165°. The benzene ring makes dihedral angles of 70.04 (8) and 77.28 (8)° with the phenyl rings, while the dihedral angle between the phenyl rings is 62.95 (8)°. In the crystal, mol-ecules are linked by C-H⋯π inter-actions.

2012
Rajesh G. Kalkhambkar D. Gayathri Vivek K. Gupta Rajni Kant Yeon Tae Jeong

In the title compound, C(7)H(4)Cl(2)N(4), the dihedral angle between the tetra-zole and benzene rings is 17.2 (2)°. In the crystal, C-H⋯N inter-actions link the mol-ecules into a flattened helical chain along the b axis.

2013
Ahmed Ould Saleck Abderrazzak Assani Mohamed Saadi Lahcen El Ammari

The title compound, Cd2V2O7, was obtained under hydro-thermal conditions. Different from the known monoclinic form, the new polymorph of Cd2V2O7 has triclinic symmetry and is isotypic with Ca2V2O7. The building units of the crystal structure are two Cd(2+) cations, with coordination numbers of six and seven, and two V atoms with a tetra-hedral and a significantly distorted trigonal-pyramidal co...

2012
Rong Peng Seik Weng Ng

The N-heterocyclic ligand in the title compound, [Cu(NCS)(C(15)H(13)N(5)S(2))](n), coordinates to the Cu(I) atom through its pyridine N-donor site, and adjacent metal atoms are bridged by the thio-cyanate ion, forming a helical chain along the b axis. The geometry of the metal atom is tetra-hedral owing to a somewhat long intra-molecular Cu-S inter-action of 2.5621 (9) Å.

2010
Hasnah Mohd Sirat Yau Sui Feng Khalijah Awang Seik Weng Ng

The title compound, C(16)H(16)O(7), isolated from Kaempferia rotunda rhizomes, features a six-membered cyclo-hexane ring that adopts a twisted-boat conformation owing to the presence of two adjacent epoxide attachments that lock in four of the six axial positions. The CH(3)CO(2)- and HO- substituents occupy equatorial positions. However, the bond angles at the ring carbon connected to the C(6)H...

Journal: :Dalton transactions 2008
Xiaoping Yang Richard A Jones Wai-Kwok Wong

Luminescent pentanuclear tetra-decker Ln(III) complexes [Eu5L4(OH)2(NO3)4(H2O)2].NO3.3H2O , [Nd5L4(OH)2(NO3)5MeOH].3MeOH.2H2O and [Eu5L4(CF3SO3)4(MeO)2(H2O)4].CF3SO3.H2O are formed from Ln(NO3)3.6H2O (Ln = Eu (1), Nd (2)) and Eu(CF3SO3)3, respectively (H2L = N,N'-bis(5-bromo-3-methoxysalicylidene)phenylene-1,2-diamine).

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