H2O

H2O的基本解释

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[电影]水

H2O所属的单词分类

Water / 水 [131]

water well  ·  water drop  ·  snowmelt  ·  snow flurry  ·  ice pellets  ·  gravity flow  ·  H2O  ·  brackish water  ·  non-potable  ·  hydropower

与H2O相关的网络例句 [注：此内容来源于网络，仅供参考]

MUCP、MDP and BC were improved in group Ⅰ after cord untethering, 32 cm H2O±14 cm H2O、 21 cm H2O±12 cm H2O、9.5 ml/cm H2O±1.3 ml/cm H2O postoperatively and 63 cm H2O±245 cm H2O、37 cm H2O±156 cm H2O、5.1 ml/cm H2O±0.8 ml/cm H2O preoperatively respectively,while in group Ⅱremained unchangable.

组术后MUCP为32 ml/cm H2O±14 cm H2O，MDP为21 ml/cm H2O±12 cm H2O，BC为9.5 ml/cm H2O±1.3 ml/cm H2O，较术前63 ml/cm H2O±25 cm H2O、37 ml/cm H2O±16 cm H2O和5.1 ml/cm H2O±0.8 ml/cm H2O明显改善；Ⅱ组术后MUCP、MDP和BC较术前无明显变化。

In this thesis, a series of complexes based on aromatic multicarboxylic acids have been successfully synthesized in solutions or under hydrothermal conditions. Their structure and properties are investigated.(1) Eight complex compounds have been synthesized and characterized by X-ray single crystal diffractive technology: The eight complexes are listed as following: [Cu242] complex 1 [Cd22(H2O)4]·4H2O complex 2 [Co(H2btc)(H2O)3] complex 3 [Co2(H2O)2]·H2O complex 4 [Ni22(H2O)4] complex 5 [Cu22(H2O)4] complex 6 [Co(H2biim)2(H2O)2](H2btc) complex 7 [Zn(H2biim)2(H2O)2](H2btc) complex 8 The structure of complex 1 is dinuclear complex resulted from weak interactions（0-D chain）; complex 2 is 1-D chain stucture result from interactions of water molecules; complex 3、4、5、6 are coordination polymers using hydrothermal synthses, where the first kind ligand is H4btc, the second kind ligand is phen and Co2+、Ni2+、Cu2+ as center ions, respectively. While the coordination enviroment of Co2+ is the same in complex 3, the coordination geometries around the Co atoms in complex 4 are obviously different because of the different reaction conditions. In complex 4, the 1-D chains are connected into 2-D layer through carboxy groups of ligand H4btc. The structures of complex 5、6 are 1-D chain stucture result from interactions of carboxy groups in ligand H4btc. Complex 7、8 are homeomorphy compounds. Either of them are linked to the 3-D chains through intermolecular hydrogen bonds. Each H4btc lose two protons and H2btc2- acts as negative electron balance.

合成了8个结构新颖的配合物，并用X-射线单晶结构分析方法确定了晶体结构，分别为： [Cu242] 配合物1 [Cd22(H2O)4]·4H2O 配合物2 [Co(H2btc)(H2O)3] 配合物3 [Co2(H2O)2]·H2O 配合物4 [Ni22(H2O)4] 配合物5 [Cu22(H2O)4] 配合物6 [Co(H2biim)2(H2O)2](H2btc)配合物7 [Zn(H2biim)2(H2O)2](H2btc)配合物8 配合物1是一个依靠弱作用连接的双核铜结构；配合物2借助水分子形成一维链状结构；配合物3、4、5、6是以H4btc为第一配体、phen为第二配体，通过水热法合成的配合物，其中，Co2+、Ni2+、Cu2+为中心离子；配合物3中的二价钴离子具有相同的配位环境，不同反应条件下得到的配合物4中的二价钴离子存在不同的配位环境，在配合物4中，一维链通过H4btc上的羧基形成一个二维层结构；配合物5、6是借助H4btc上的羧基形成的一维链状结构；配合物7、8属于异质同晶结构，它们的分子通过分子间氢键形成三维网状结构，H4btc上的羧基失去2个质子，作为一个二价负离子起到电荷平衡作用。

Structures of Na~+-AD ion-complexes with 1 or 2 H2O molecules were obtained. It was found that H2O can bond with Na~+ in the structure of Na~+-AD to form Na-O van der Waals bond. H2O molecule can also bond with N or O atoms in AD moiety to form H-bonds as N-H…Ow or O…Hw-Ow. The former process takes place more easily. The most stable structures of Na~+-AD ion-complexes with 1 and 2 H2O molecules are W-C7AB and 2W-C7AB, respectively.αB conformer of Na~+-AD can not exist in the presence of 2 H2O molecules.

研究发现水分子可以结合在Na~+-AD络合离子中的Na~+附近形成Na-OW范德华键，也可以与Na~+-AD络合离子骨架结构中电负性较强的N或O原子结合形成N-H…OW或O…HW-OW氢键，相对而言，水分子更容易结合在Na~+-AD络合离子中的Na~+位置，Na~+-AD最稳定的带1个或2个水分子的结构分别为W-C7AB和2W-C7AB，Na~+-AD络合离子的αB构象在2分子水存在的情况下完全消失。

与H2O相关的网络解释 [注：此内容来源于网络，仅供参考]

adipate：己二酸

文章摘要:通过Cu(ClO4)2与己二酸(adipate)和邻菲咯啉(phen)在甲醇-水溶剂中反应得到了一个双核配合物[Cu2(phen)4(adipate)](ClO4)2.(H2O)1.33,并用元素分析、红外及X-单晶衍射技术进行了结构表征.标题化合物属于单斜晶系,C2/c空间群,

discharge：放电

在放电(Discharge)过程中,极板上的二氧化铅(正极).海绵铅(负极)和电解液中的硫酸发生放电化学反应,产生硫酸铅(PbSO4)和水(H2O),正负极板相互之间的差别减校因为电池的电压取决于极板材料的不同和电解液的浓度,所以放电反应之后,

Fe：铁

质量指标项目指标水合肼(N2H4.H2O)含量≥80% 不挥发物含量≤0.050% 铁(Fe)含量≤0.0005% 重金属(以Pb计)含量≤0.0005% 氯化物(以Cl计)含量≤0.005% 硫酸盐(以SO4计)含量≤0.005% 用途本品为强还原剂,广泛应用于农药、医药、染料、发泡剂、抗氧化剂等.