نتایج جستجو برای: znii complex
تعداد نتایج: 783963 فیلتر نتایج به سال:
reserches show that relationship between human and residential places is based upo both emotional and identity structures. in other words, habitat place is not only the creator of a part of humanistic identity but also form a kind of sentimental and emotional bond that may result in tendency to maintain closeness to a specific place. therefor, formaton of emotional and identity relationship wit...
Reaction of [enM(H2O)2](NO3)2 (en = ethylenediamine, M = PdII, PtII) with 2-hydroxypyrimidine (Hpymo) in water results in self-assembly to cyclic complexes of type [enM(pymo-N1,N3)]4(NO3)4 (1, M = PdII; 2, M = PtII) which are structurally analogous to calix[4]arenes. The tetranuclear cations in compounds 1 and 2 adopt, in the solid state, a 1,3-alternate orientation of the pymo residues. Attemp...
The synthesis, structure, and physical properties of a Heisenberg exchange-coupled cluster containing naphthalene groups are described. [Fe2(O)(O2CCH2C10H7)2(TACN-Me3)2]2+ (3) crystallizes in space group P1 with unit cell parameters a = 12.94(2) A, b = 14.84(2) A, c = 15.23(2) A, alpha = 101.12(7) degrees, beta = 90.8(1) degrees, gamma = 114.14(7) degrees, V = 2605(6) A3, and Z = 2 with R = 0.0...
abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...
in this paper, we give some necessary conditions for a complex difference equation of malmquist type $$sum^n_{j=1}f(z+c_j)=frac{p(f(z))}{q(f(z))},$$ where $n(in{mathbb{n}})geq{2}$, and $p(f(z))$ and $q(f(z))$ are relatively prime polynomials in $f(z)$ with small functions as coefficients, admitting a meromorphic function of finite order. moreover, the properties of finite o...
stereoisograms of octahedral complexes are classified into five types (type i--typev) under the action of the corresponding rs-stereoisomeric group. their enumeration is accomplished in a type-itemized fashion, where fujita's proligand method developed originally for combinatorial enumeration under point groups (s. fujita, theor. chem. acc., 113, 73--79 (2005)) is extended to meet the requireme...
بازهای شیف به طور گسترده ای به عنوان لیگاند در شیمی کئوردیناسیون به کار می روند.همچنین این ترکیبات به عنوان کاتالیزور و در پزشکی به عنوان آنتی بیوتیک،آنتی تومور و ضد حساسیت کاربرد دارند.بازهای شیف به آسانی تهیه شده و تقریبا با همه یون های فلزی کمپلکس های پایداری تشکیل می دهند و باعث پایداری انواع یون ها ی فلزات واسطه در حالت های اکسیداسیون متفاوت می شوند. بسیاری از کمپلکس های باز شیف فعالیت کا...
several novel mononuclear zn(ii) complexes, [zn(bpy)l2], where bpy=2,2’-bipyridine and l=monoanions of phenylcyanamide (pcyd), 4-methylphenylcyanamide (4-mepcyd), 3,5-dimethylphenylcyanamide(3,5-me2pcyd),4-methoxyphenylcyanamide(4-meopcyd), 3,5-dimeth-oxyphenylcyanamide (3,5-meo2pcyd), 3-chlorophenylcyanamide (3-clpcyd), 2,3-dichlorophenyl-cyanamide (2,3-cl2pcyd), 4-bromophenylcyanamide (4-brpc...
the interaction between 4, 7, 13, 16, 21, 24 - hexaoxa-1,10 - diazabicyclo [8.8.8] hexacosane (c222) and 7,7,8,8- teracyanoquinodimethane (tcnq) has been studied in chloroform at 25°c. the results indicate a two step mechanism. at the first step, two adducts (assign as p1 and p2) are formed through equilibrium reactions. in continue and through nonequilibrium reactions the adducts are converted...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید