ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

119

Like
2018-12-20 08:45:50 | 1 | Organometallic Chemistry
Reaction of carbonyl Compounds
_THE REACTION: MN(CO)5ME + CO __THE REACTION: MN(CO)5ME + CO __THE REACTION: MN(CO)5ME + CO __→__ MN(CO)5(COME) IS AN EXAMPLE OF:__ MN(CO)5(COME) IS AN EXAMPLE OF:__ MN(CO)5(COME) IS AN EXAMPLE OF:_ _ _ a ligand addition a β-elimination an oxidative addition an alkyl migration Read more

2018-12-20 08:36:30 | 0 | Organometallic Chemistry
Electron Rule-18
_WHICH METAL CENTRE DOES NOT OBEY THE 18-ELECTRON RULE?_ _ _ Fe in Fe(η5-C5H4COMe)2 Co in Co2(CO)8 Ru in [Ru(η6-C6Me6)2]2+ V in V(CO)6 Read more

2018-12-20 08:23:57 | 1 | Organometallic Chemistry
Carbonyl compounds
_WHICH STATEMENT IS INCORRECT ABOUT CO LIGANDS?_ _ _ A CO ligand can accept electrons into its _π_* MO; this weakens the C–O bond In the IR spectrum of Fe(CO)5, absorptions assigned to the CO stretching modes are at higher wavenumber than that of free CO CO ligands can adopt terminal, μ and μ3 bonding modes; the amount of back ... Read more

2018-12-15 11:08:42 | 1 | Advanced coordination chemistry
Valence bond theory
Based on the principles of valence bond theory, which of the following would be the hybridization of the bonding orbitals of the copper atom in [CuNH3Cl5]3− A spd B sp3d2 C sp3 D sp3d5 Read more

2018-11-11 17:39:29 | 23 | Selections in Inorganic Chemistry
Write on
WRITE ON APPLICATION OF ORGANOMETALLIC COMPOUNDS AS ZIEGLER-NATA ?POLYMERIZATIONS AND WATER GAS REACTIONS ?WRITE ON THE EFFECT OF TEMPERATURE ON SUPERCONDUCTIVITY OF ALLOYS Read more

2018-11-11 17:36:39 | 3 | Selections in Inorganic Chemistry
Discuss the following:
DISCUSS THE RELATION BETWEEN FORMATION OF MOLECULAR ORBITALS AND CONDUCTIVITY OF MATERIALS? DISCUSS" LIFE IS INORGANIC TOO" EXPLAIN IN TERMS OF IMPORTANCE OF METALS IN BIOLOGICAL SYSTEMS REFERRING TO METALLO PORPHYRINS, CHLOROPHYLL AND HEME PROTEINS? Read more

2018-11-10 21:27:31 | 110 | Transition elements
أكسيد الكروم السداسى
بم تفسر اللون البرتقالى الفاتح لأكسيد الكروم السداسى اشرح تاثير الوسط الحمضى عى أيونات كرومات البوتاسيوم . Read more

2018-11-10 21:17:04 | 98 | Transition elements
خلات الكروم
بم تفسر خلات الكروم الثنائية لها خواص دايامغناطيسية ما هى الصورة التى يمكن لعناصر الكروم والموليبدنيوم والتنجستن فى الصورة الصفرية Read more

2018-11-09 11:26:37 | 172 | Lanthanides and Actinides
الخواص المغناطيسية للديسبروسيوم
بم تفسر الخواص المغناطيسية غير المتوقعة لعنصر الديسبروسيوم Read more