نتایج جستجو برای: مولکول cd 4
تعداد نتایج: 1344824 فیلتر نتایج به سال:
در دودهه ی اخیر، شاخص جابجایی شیمیایی مستقل هسته ای (NICS) در بسیاری از مقالات برای سنجش میزان آروماتیسیته ترکیبات آلی و معدنی استفاده شده است. در این پژوهش خصلت آروماتیکی، غیرآروماتیکی و ضدآروماتیکی در حلقههای مختلف نانوساختارهای کاسهایشکل کورونن[1] (C24H12)، کورانولن[2] (C20H10)، سومانن[3] (C21H12) و سیرکیومتریندن[4] (C36H12) که زیرساختهای فولرن (C60) می باشند، با استفاده از این شاخص بر...
Soil and water salinity are important problems in the coastal region of Bangladesh. Heavy metal also entering soil through various ways such as sewage sludge, fertilizers pesticides. A pot experiment was conducted to study variability cadmium (Cd) availability tomato (Lycopersicon esculentum Miller) grown on Cd-contaminated saline soil. The outlined a completely randomized block design (RCBD) w...
Abstract Tennantite-(Cd), Cu 10 Cd 2 As 4 S 13 , was approved as a new mineral species from the Berenguela mining district, Pacajes Province, La Paz, Bolivia. It occurs black metallic anhedral grains, up to 1 mm across, associated with baryte, montmorillonite and secondary Cd-sulfates (aldridgeite, niedermayrite voudourisite). In reflected light, tennantite-(Cd) is isotropic grey brownish tints...
The title Cd(II) coordination polymer, catena-poly[[{1,4-bis-[1-(2-pyridylmeth-yl)benzimidazol-2-yl]butane}cadmium(II)]-μ-benzene-1,3-dicarboxyl-ato], [Cd(C(8)H(4)O(4))(C(30)H(28)N(6))](n), was obtained by reaction of CdCO(3), benzene-1,3-dicarboxylic acid (H(2)btc) and 1,4-bis-[1-(2-pyridylmeth-yl)benzimidazol-2-yl]butane (L). The Cd(II) cation is six-coordinated by an N(2)O(4)-donor set. L ac...
The asymmetric unit of the title compound, (C(7)H(18)N(2)O)(2)[Cd(2)Cl(8)], comprises one 4-(2-hy-droxy-eth-yl)-2-methyl-piperazine-1,4-diium dication and a half [Cd(2)Cl(8)](4-) anion. The two Cd atoms are each coordinated by two bridging Cl atoms and three terminal Cl atoms and the [Cd(2)Cl(8)](4-) anion is located on an inversion centre. The crystal structure consists of N-H⋯Cl hydrogen-bond...
The structure of the title compound, [Cd(NCS)(2)(C(5)H(8)N(2))(4)], consists of isolated mol-ecules of [Cd(NCS)(2)(Eim)(4)] (Eim = 1-ethyl-imidazole), which contain a compressed octa-hedral CdN(6) chromophore. The NCS(-) anions are trans and four N atoms from the 1-ethyl-imidazole ligands define the equatorial plane. The mean Cd-N(Eim) and Cd-N(NCS) distances are 2.334 (4) and 2.379 (5) Å, resp...
The title complex, [Cd(C(6)H(2)N(2)O(4))(H(2)O)(3)](n), is a new monoclinic polymorph. The ortho-rhom-bic form has previously been reported [Ma et al. (2006 ▶). Acta Cryst. E62, m2528-m2529]. The Cd-N and Cd-O bond lengths range from 2.265 (3) to 2.333 (3) Å; a weak Cd-O inter-action is also present, the inter-atomic distance being 2.658 (4) Å. The Cd(II) ions, which have a distorted penta-gona...
The title complex, [Cd(2)(C(8)H(7)O(3))(4)(C(20)H(22)N(4)O)(2)], forms a dimer of the paddle-wheel type, located on a crystallographic inversion centre. The Cd(II) ion is hexa-coordinated by four carboxylate O atoms [Cd⋯O = 2.280 (2)-2.404 (2) Å] from two chelating 4-methoxy-benzoate anions, and two N atoms [Cd⋯N = 2.313 (2) and 2.332 (2) Å] from one chelating 2,2'-dimethyl-3,3'-(oxydiethyl-ene...
In the crystal structure of the title compound, [Cd(C(12)H(20)NSi)(2)], the Cd(II) cation is coordinated by two N and two C atoms within an irregular polyhedron. The four Cd-X (X = C, N) bond lengths are in the range 2.166 (4)-2.513 (4) Å.
OBJECTIVE To examine the association between cortisol levels and conduct disorder (CD) in adolescent mothers. Past research has shown that low levels of cortisol were associated with CD, particularly with its aggressive symptoms. The authors tested the hypothesis that adolescent mothers with CD would show lower levels of salivary cortisol compared to mothers without CD at 4 and 9 months postpar...
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