نتایج جستجو برای: مولکول cd 4

تعداد نتایج: 1344824  

ژورنال: شیمی کاربردی 2017

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...

Journal: :Bangladesh Journal of Botany 2023

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...

Journal: :Mineralogical Magazine 2022

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...

2009
Wei-Ping Zhang Wen-Xiu Zhao Gui-Hua Cui Shun-Fu Dong

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...

2011
Tao Rong

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...

2010
Rong-Xun Li Qi-Ye Wu Fa-Qian Liu

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...

2009
Hua Yin

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...

2010
Dian-Ying Zhao

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...

2012
Min Li

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.

Journal: :Journal of the American Academy of Child and Adolescent Psychiatry 2004
Rima Azar Mark Zoccolillo Daniel Paquette Elsa Quiros Franziska Baltzer Richard E Tremblay

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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