(Z)-1[2-(苯基二溴化锡基)乙烯基]-1-环己醇的合成及晶体结构

报道了标题化合物〔C14H18Br2OSn〕的合成及晶体结构。该晶体属于单斜晶系，空间点群为P21/c，晶胞参数a=11.711(2)，b=9．114（2），c=16．864（3）A，β=102.94（1）°，V=1604.55（0）A3，Mr=480．78，Z=4，Dc=1．99g／cm3，u=65．20cm－1，F（000）=919，R=0．050，Rw=0．050．晶体结构由直接法解出。标题化合物分子中的锡原子被配体的2个碳、2个溴和1个氧原子配位，配位原子呈畸变的三角双锥构型，环已基为椅式构象，五员杂环为信封构象。

Crystal structure and mechanism of (Z)-1-[2-(phenyl-bromide-chloride)vinyl]-1-cyclohexanol

The crystal structure and mechanism of the title molecule are described. This crystal is orthorhombic, belonging to space group PC21/B with a=1,002 1(2) nm, b=1.483 0(3) nm, c=2.173 6(4) nm, V=3.230 39(2) nm(3), Z=2, D-c=1.80 g/cm(3), R=0.069 3. The structure was solved by direct method. The tin atom of the title compound exists in two distorted-trigonal-bipyramidal geometry, defined by two carbon, one bromide, one chloride and one oxygen atoms leading to a five-membered chelate ring. In the structure, the five-membered ring containing the intermolecular O-->Sn has a half chair conformation.

Synthesis and chemical properties of [Z]-1-[2-(triaryl stannyl)vinyl]cyclooctanol

The compounds of [Z]-1-[2-(triphenyl stannyl) vinyl] cyclooctanol (1) and [Z]-1-[2-(tri-p-tolyl stannyl) vinyl] cyclooctanol (2) were synthesized by the reactions of triphenyltin hydride and tri-p-tolyltin hydride with 1-ethynyl cyclooctanol. The crystal structure of compound 1 was determined. The reactions of compound 1 and 2 with IC1, Br-2, I-2 formed nine organotin halides. The organotin oxide or hydroxide were prepared by the reactions of [Z]-1-[2-(phenyl dibromo stannyl) vinyl] cyclooctanol (6) and [Z]-1-[2-(diphenyl monobromo stannyl) vinyl] cyclooctanol (5) with KOH. Three complexes were obtained by the reactions of [Z]-1-[2-(phenyl diiodide stannyl) vinyl] cyclooctanol (8) with three ligands (2,2'-bipyridyl,5-nitro-1,10-phenanthroline,8-Hydroxyquinoline). The sixteen new compounds synthesized in this paper were characterized by means of elemental analysis, IR, H-1 NMR. The reaction mechanism of triphenyltin hydride and tri-p-tolyltin hydride with 1-ethynyl cyclooctanol were also proposed.

[Z]-1-[2-(三芳基锡基)乙烯基]环辛醇的合成和性质

本文用三苯基氢化锡、三对甲苯基氢化锡作为锡氢化试剂与1-乙炔基环辛醇进行反应,合成了两个有机锡化合物:[Z]-1-[2-(三苯基锡基)乙烯基]环辛醇(1)和[Z]-1-[2-(三对甲苯基锡基)乙烯基]环辛醇(2),并测定了1的晶体结构.1和2分别与ICl,Br_2,I_2反应,得到六个有机锡一卤化物和三个有机锡二卤化物(3～11).有机锡二卤化物6和一卤化物5与KOH乙醇溶液反应,分别得到相应的锡氧化物和锡氢氧化物(12,13).有机锡二卤化物8分别与含氮双齿配体[2,2-联吡啶(Bipy),5-硝基-1,10-邻菲罗啉(Nphen),8-羟基喹啉(Oxin)]反应,得到三个相应的配合物(14～16).十六个新化合物通过元素分析、锡含量测定、IR、~1HNMR测定对其结构进行了表征,同时提出了1和2的生成反应历程.

高温高压下Z轴水晶的电导率实验研究

电导率测量的过程历经了从直流-交流-阻抗谱的过程，已经为地球物理学家借助于高温高压手段研究固体深部物质电学性质所广泛认同的。本文首先介绍了阻抗谱法测定水晶电导率的实验原理，进而采用该方法在10^-1～10^6Hz的频率范围以及1．0—4．0GPa和823—1073K条件下，借助于YJ-3000t紧装式六面顶高压设备对沿Z轴方向生长的水晶进行了的电导率实验就位测量。实验结果表明：在选择的频率范围，样品的复阻抗的模和相角都对频率具有很强的依赖性；随着温度的升高，电阻迅速降低，电阻率降低，电导率增大；在压力1．0—4．0GPa，其活化焓分别为：0．8548eV、0．8320eV、0．8172eV、0．7834eV，独立于温度的指前因子分别为：1．003S／m、1．778S／m、3．082S／m、6．987S／m，活化焓随着压力的升高而降低，指前因子随着压力的升高而增大。

Valve surgery in active infective endocarditis: a simple score to predict in-hospital prognosis

Aims Surgery for infective endocarditis (IE) is associated with high mortality. Our objectives were to describe the experience with surgical treatment for IE in Spain, and to identify predictors of in-hospital mortality. Methods Prospective cohort of 1000 consecutive patients with IE. Data were collected in 26 Spanish hospitals. Results Surgery was performed in 437 patients (43.7%). Patients treated with surgery were younger and predominantly male. They presented fewer comorbid conditions and more often had negative blood cultures and heart failure. In-hospital mortality after surgery was lower than in the medical therapy group (24.3 vs 30.7%, p = 0.02). In patients treated with surgery, endocarditis involved a native valve in 267 patients (61.1%), a prosthetic valve in 122 (27.9%), and a pacemaker lead with no clear further valve involvement in 48 (11.0%). The most common aetiologies were Staphylococcus (186, 42.6%), Streptococcus (97, 22.2%), and Enterococcus (49, 11.2%). The main indications for surgery were heart failure and severe valve regurgitation. A risk score for in-hospital mortality was developed using 7 prognostic variables with a similar predictive value (OR between 1.7 and 2.3): PALSUSE: prosthetic valve, age ≥ 70, large intracardiac destruction, Staphylococcus spp, urgent surgery, sex [female], EuroSCORE ≥ 10. In-hospital mortality ranged from 0% in patients with a PALSUSE score of 0 to 45.4% in patients with PALSUSE score > 3. Conclusions The prognosis of IE surgery is highly variable. The PALSUSE score could help to identify patients with higher in-hospital mortality.

Obraz stosunków językowych polsko-niemieckich w historii języka polskiego. Księga sądu wójtowskiego m. Opola z lat 1698-1721 jako językowy wyraz kontaktów międzyetnicznych

Wydział Filologii Polskiej i Klasycznej: Instytut Filologii Polskiej

Frazeologizmy z nazwami zwierząt we współczesnym języku polskim

Wydział Filologii Polskiej i Klasycznej: Instytut Filologii Polskiej

Przydatność taksonomiczna cech morfologicznych stadiów młodocianych mechowców z podrodziny Crotoniinae Thorell, 1876 (Acari, Oribatida, Camisiidae)

Wydział Biologii: Instytut Biologii Środowiska

Charakterystyka ekspresji receptorów scavenger w błonach komórkowych monocytów ludzkich u pacjentów z chorobą niedokrwienną serca

Wydział Biologii: Instytut Biologii Eksperymentalnej