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Synthesis, Structure, and Hirshfeld Surface Analysis of tetrakis(N,N’-diethylthiourea)bis(isothiocyanato)nickel Husni Wahyu Wijaya; Danar; Zainal Abiddin; I Wayan Dasna
Indonesian Journal of Material Research Vol. 1 No. 3 (2023): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20231313

Abstract

The complex compound tetrakis(N,N’-diethylthiourea)bis(isothiocyanato)nickel or [Ni(detu)4(NCS)2] (denoted as UMCC-1) has been synthesized by reflux method in two different solvents namely acetone and methanol. This study aims to synthesize, characterize, and analyze the Hirshfeld Surface complex UMCC-1, which was obtained using the reflux method with the mole ratio of NiCl2: detu: KSCN is 1:2:4. Single crystals UMCC-1 in acetone and methanol are dark green in color with melting points of 135-137°C and conductivity of 66.4-84.4 µS. The FTIR absorption band analysis of the two crystals is very similar, ν(C S) detu 590 cm−1 and ν(C≡N) isothiocyanate 2119 cm−1. The refinement of the crystal structure from the single crystal XRD data shows that the two dark green crystals are a molecular type that has a distorted octahedral geometry with the same crystal lattice, monoclinic crystal lattice, P21/c1 space group (no.14), crystal lattice parameter a= 11.112(3) Å, b= 17.249(5) Å, c= 9.647(3) Å, and β= 100.785(10). However, the complex produced in acetone solvent has better refinement quality than methanol concerning %R= 3.27 and %R = 4.55, respectively. The UMCC-1 crystal shows intermolecular hydrogen bonds N-H---S(isothiocyanato) and intramolecular hydrogen bonds N-H---S(detu) with Hirshfeld Surface analysis showing a significant contribution of H---H (69.5%) on crystal packing.
Synthesis, Structural Determination and Antibacterial Properties of Zinc(II) Complexes Containing 4-Aminopyridine Ligands I Wayan Dasna; Dewi Mariyam; Husni Wahyu Wijaya; Ubed Sonai Fahruddin Arrozi; Sugiarto Sugiarto
Indonesian Journal of Chemistry Vol 23, No 4 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82801

Abstract

Three zinc(II) complexes containing 4-aminopyridine (4-NH2py) [Zn(4-NH2py)2(NCS)2] (1), [Zn(4-NH2py)2Cl2] (2), and [Zn(4-NH2py)2(NCS)Cl] (3) were synthesized and characterized by FTIR and single crystal X-ray diffraction. All complexes adopt a slightly distorted tetrahedral geometry with different crystal packing. Complex 1 crystallizes in the orthorhombic Pmmn space group, complex 2 in the monoclinic C2/c space group, and complex 3 in the orthorhombic Pbca space group. Non-covalent interactions such as NC-S···H, -Cl···H, and µ-µ stacking interaction between 4-NH2py and other ligands (NCS− and Cl−) are observed in the crystals packing. In vitro, antibacterial screening of all complexes was evaluated against two bacteria (Escherichia coli and Staphylococcus aureus). The results show that 1 has the highest antibacterial activity than 2 and 3. This difference is due to differences in the interactions elicited by the anion ligands.
Development of challenges-based learning thematic model to improve critical thinking skills for primary school students Nafi Isbadrianingtyas; Cholis Sa'dijah; I Wayan Dasna; Eddy Sutadji
Research and Development in Education (RaDEn) Vol. 4 No. 1 (2024): July
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/raden.v4i1.32910

Abstract

Learning in elementary schools emphasizes receiving information and subject matter rather than developing thinking abilities and understanding concepts. However, in the 21st century which is full of challenges and rapid changes like now, students need the ability to develop critical thinking. This is a need that should be reflected in the curriculum, because individual growth is basically characterized by Critical and innovative Thinking Skills. Based on needs analysis, this research develops a learning model with a thematic challenges-based learning approach. The novelty of this research lies in the Challenges/Competition. This challenge is integrated with technology-based learning media so that students are able to think critically. The aim of this research is to produce a Thematic Challenges-based Learning model to train elementary school students' critical thinking. This research uses a Research & Development research design. Research and development, or better known as R & D, is research that produces products that can be used to overcome problems faced by practitioners in completing their tasks. This research is a development research that adopts the Ploom model. This research is a development research that adopts the Ploom model. The development process follows Akker et al (2013) development framework, which is divided into three main stages: (1) Preliminary study; (2) development and prototyping; and (3) evaluation. The data in this development research consists of qualitative data and quantitative data. The syntax of the thematic based learning challenge model includes: (1) Big Idea, (2) Thematic Integration (Webbed Model), (3) Main Question, (4) Challenge, (5) Guiding Question, (6) Guiding Activity , (7) Guiding Resources, (8) Direct experience, (9) Solutions, (10) Assessments, and (11) Publications. The advantage of the Challenges-based Learning Thematic learning model is that it can improve students' critical thinking skills because students can learn to solve problems related to everyday life.
MOOC untuk Kegiatan Pengabdian pada Masyarakat di Universitas Negeri Malang Surjani Wonorahardjo; I Wayan Dasna
Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Perguruan Tinggi Mengabdi: Berkarya dan Berinovasi Untuk Membangun Masyarakat Semakin Tangguh di Mas
Publisher : Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Era digital mengubah gaya hidup di seluruh bidang kehidupan dalam masyarakat. Platform-platform pembelajaran baru untuk menyebarkan ilmu pengetahuan kepada masyarakat umum lewat lembaga pendidikan tinggi telah menjadi sarana perguruan tinggi untuk menyumbangkan ilmunya bagi masyarakat umum dan dengan mudah dijangkau. Massive Opened Online Course adalah salah satu strategi, dan sarana untuk menyebarkan ilmu kepada masyarakat secara luas dan praktis serta berkelanjutan. MOOC dapat dikembangkan sebagai bagian dari tridarma perguruan tinggi, untuk pembelajaran, pengembangan ilmu, dan pengabdian pada masyarakat sekaligus melibatkan masyarakat sendiri secara aktif. Universitas Negeri Malang mempunyai platform tridarma ini dalam mooc.um.ac.id. Hampir setiap jenis kegiatan bersama masyarakat dapat difasilitasi di sini, dan sangat bermanfaat terutama di masa pandemi. Ketersediaan sarana yang sangat praktis dan murah ini diharapkan menjadi bagian tak terpisahkan dari perjalanan Universitas Negeri Malang sebagai institusi pendidikan tinggi yang juga mengembangkan ilmu serta mengabdi kepada masyarakat. Para dosen dapat mengembangkan kursus-kursus yang dapat diakses masyarakat luas setelah menentukan topik pengabdiannya dan merancang serta menjalankan kegiatan ini dengan metode yang dipilih, misalnya metode gabungan antara daring dan luring. Adapun kursus yang dikembangkan dapat digunakan untuk kegiatan yang sama secara berulang-ulang untuk kelompok masyarakat yang lain. Salah satu contoh kursus MOOC yang dibuka untuk masyarakat adalah kursus Sains Untuk Masyarakat yang dapat diakses semua masyarakat.Kata kunci: pengabdian masyarakat, MOOC, tridharma perguruan tinggi
Synthesis, Structure, Magnetic and Antibacterial Properties of polymeric [M(Quin)2(N(CN)2)2]∞ (M = Mn(II), Co(II); Quin = quinoline) I Wayan Dasna; Ubed Sonai Fahruddin Arrozi; Husni Wahyu Wijaya; Sutandyo Dwija Laksmana; Stéphane Golhen
Journal of Mathematical and Fundamental Sciences Vol. 54 No. 2 (2022)
Publisher : Directorate for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2022.54.2.4

Abstract

Two complexes of [Mn(Quin)2(N(CN)2)2]∞ (1) and [Co(Quin)2(N(CN)2)2]∞ (2) were synthesized and characterized. The as-synthesized complexes crystallized in a triclinic lattice with a space group of P-1. The unit cell parameter of 1 was a = 7.5207(14) Å, b = 7.7729(16) Å, c = 9.5968(15) Å, α = 96.388(6) o, β = 112.617(5) o, γ = 102.751(6) o, while for complex 2 it was a = 7.3942(10) Å, b = 7.7960(10) Å, c = 9.4907(13) Å, α = 96.631(4) o, β = 112.742(4) o, γ = 102.458(4) o. The magnetic properties and antimicrobial properties of both polymeric complexes were examined by magnetic susceptibility and diffusion techniques, respectively. Complexes 1 and 2 both showed antiferromagnetic properties and had a higher inhibitory effect on the growth of Staphylococcus aureus than Salmonella typhi.
Optimasi Pembelajaran Kimia Melalui Peningkatan Pemahaman Bersama Dan Pendampingan Bagi Guru Mgmp Kimia dalam Implementasi Kurikulum Merdeka di Kabupaten Lumajang Sutrisno, Sutrisno; Munzil, Munzil; Dasna, I Wayan; Wijaya, Husni Wahyu; Setiawan, Nur Candra Eka
Bakti Sekawan : Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2023): Desember
Publisher : Puslitbang Sekawan Institute Nusa Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/bakwan.v3i2.392

Abstract

Artikel pengabdian ini bertujuan untuk mengoptimasi pembelajaran kimia melalui peningkatan pemahaman bersama dan pendampingan bagi para guru MGMP Kimia dalam implementasi kurikulum merdeka di Kabupaten Lumajang. Kurikulum merdeka memberikan kebebasan bagi guru dalam menyusun materi pembelajaran yang sesuai dengan kebutuhan dan potensi siswa. Namun, kendala seperti keterbatasan akses informasi, sarana, prasarana, dan minimnya kolaborasi antar guru dapat mempengaruhi kualitas pembelajaran kimia. Tim pengabdian Departemen Kimia FMIPA UM melakukan analisis kebutuhan dan tantangan yang dihadapi para guru MGMP Kimia Kabupaten Lumajang. Kegiatan ini dilaksanakan selama dua bulan. Berdasarkan hasil analisis, dilakukan program pendampingan dan pelatihan yang fokus pada pemahaman bersama tentang kurikulum merdeka dan penerapannya dalam pembelajaran kimia. Program ini melibatkan kegiatan pelatihan, diskusi, observasi, dan pemberian feedback yang berkesinambungan. Selain itu, tim pengabdian juga memberikan dukungan dalam menyusun dan mengoptimalkan sumber daya pembelajaran kimia. Sumber daya ini berupa modul pembelajaran, materi presentasi, dan bahan ajar interaktif lainnya yang dapat meningkatkan kreativitas dan efektivitas pembelajaran kimia. Hasil dari pelaksanaan program dievaluasi untuk mengukur dampak dan efektivitas kegiatan pengabdian. Artikel ini berharap dapat memberikan panduan bagi para pendidik dan peneliti untuk meningkatkan kualitas pendidikan kimia di Kabupaten Lumajang. Diharapkan, pengabdian ini dapat berkontribusi positif dalam mendukung pembangunan pendidikan yang lebih baik dan inovatif di daerah tersebut.
Argumentation and Critical Thinking Skills with Argument-Driven Inquiry (ADI) Learning Model: A Literature Review Limbong, Stella Afrilita; Dasna, I Wayan; Munzil, Munzil
Journal of Disruptive Learning Innovation (JODLI) Vol 5, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v5i12023p37-46

Abstract

The development of globalization affects all aspects of life, including education. The world of education entering the fifth revolution is characterized by the use of digital devices and the internet in learning. This results in demands and responsibilities for teachers and students to train the framework of creativity, communication, collaboration, and critical thinking known as 4C.One effective way to enhance students' critical thinking and communication skills is through the implementation of the ADI (Argument-Driven Inquiry) learning model.The application of the ADI model is focused on the activities of students in building their knowledge independently to convey the results of their findings as a form of communication. Implementing ADI in chemistry learning will train students to find a finding based on scientific evidence. However, implementing the ADI learning model has obstacles to achieving learning objectives. One is that students are less accustomed to arguing during learning. This causes the ADI learning model to need to be assisted by other approach models in order to increase the effectiveness of ADI learning. This literature review applies Systematic Literature Review (SLR) by reviewing the results of previous research and adjusting to the focus of the study. The results of the review of some of these studies indicate that applying the ADI learning model with the help of several approaches, such as metacognitive and practicum-assisted learning chemistry, provides better results in increasing students' critical thinking skills and scientific argumentation.
The Effect of Student Worksheet-Assisted Project-Based Learning on Learning Outcomes and Critical Thinking in Moderation of Student Learning Motivation in Electrolytic Cell Putra, Vahemas Aditya pamila; Dasna, I Wayan; Nazriati, Nazriati
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i22023p122-132

Abstract

This study aims to discover the differences between learning outcomes and critical thinking skills between students who follow project-based Learning and conventional Learning. Second, to know the impact of project-based learning on student worksheets on learning outcomes and critical thinking in moderation of student learning motivation. The method used in the initiation is a quasi-experiment with a pretest-posttest control group design. The results show that (1) there are differences in learning outcomes between students who follow project-based learning and students who follow conventional learning; (2) there is a difference in critical thinking capabilities among students who go with project-based learning and conventional students; (3) motivation to moderate project-based learning to help students worksheets to improve student's learning outcomes; (4) motivation not to moderately project-driven Learning to help students' worksheets on critical think ability.
The Effectiveness of Contextual-based Instructional Materials of Elements of Group 15 For Inorganic Chemistry Wulandari, Agtri; Dasna, I Wayan; Wonorahardjo, Surjani
JPP (Jurnal Pendidikan dan Pembelajaran) Vol 26, No 1 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um047v26i12019p028

Abstract

The purpose of research is determine the effectiveness of teaching materials based contextual elements of group 15 for the course of inorganic chemistry. The research design is one group pretest-posttet only. Subjects were students of Chemistry Education University of Palangka Raya as many as 47 people. Based on the research results, is obtained percentage of graduated postes amounted to 93.6%, mean of  n-gain score is 0,54 (moderate), and the probability value (p) is 0,000, showed no significant difference between the pretest and posttest. Therefore, teaching materials element of group 15 based on contextual for inorganic chemistry course effective to improve student’s learning result. Penelitian ini bertujuan untuk mengetahui efektivitas bahan ajar unsur golongan 15 berbasis kontekstual untuk mata kuliah kimia anorganik. Desain penelitian yaitu one group pretest-posttet only. Subyek penelitian adalah mahasiswa Program Studi Pendidikan Kimia Universitas Palangka Raya sebanyak 47 orang. Berdasarkan hasil penelitian, diperoleh persentase jumlah lulus postes sebesar 93,6%, rata-rata n-gain score sebesar 0,54 kategori sedang, dan nilai probabilitas (p) yaitu 0,000 yang menunjukkan ada perbedaan secara signifikan antara nilai pretes dan postes. Oleh karena itu, bahan ajar unsur golongan 15 berbasis kontekstual untuk mata kuliah anorganik efektif meningkatkan hasil belajar mahasiswa.
Implementation of Problem-Based Learning-Stem Strategy on Students’ Conceptual Understanding and Critical Thinking in Fundamental of Chemical Equilibrium Prastika, Frissa Rizkihati; Dasna, I Wayan; Santoso, Aman
Jurnal Ilmu Pendidikan Vol 28, No 1 (2022): June
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um048v28i1p1-6

Abstract

This research aims to determine differences in students’ conceptual and critical thinking of XI High School Students that teach using Problem Based Learning-STEM strategy on learning chemical equilibrium. This research use design quasi-experimental factorial 2x2 design with convenience sampling. Instruments used in this research are students’ conceptual and critical thinking tests. The result shows that (1) there are differences students’ conceptual and critical thinking in the group that learned by Problem Based Learning-STEM with the group that learned using Problem Based Learning Strategy, (2) there are differences in students’ conceptual and critical thinking based on initial abilities in the group that learned by Problem Based Learning-STEM with the group that learned using Problem Based Learning strategy, (3) there is no interaction of Problem Based Learning-STEM strategy and Problem Based Learning based on initial abilities to students’ conceptual and critical thinking
Co-Authors Adyatma Wicaksono Afrahamiryano Afrahamiryano Airiza Dian Ali Amirul Mu'minin Aman Santoso Anugerah Ricky Wijaya Anugrah Ricky Wijaya Arum Dwisetyo Arini Asmi Munadhiroh Astrid Kinantya Paramita Astrid Kinantya Paramita Aynin Mashfufah Baiq Asma Nufidaa Betty, Yohana Idamina Candra Utama Carera, Inova Putri Cholis Sa’dijah CHORERA, APRILIA Citra Ayu Dewi Cylindrica, Vrisca Bella Danar Danar Dayu Ardhiyatmita Nur Rahmawati Dewi Mariyam Dewi Mariyam Dhia Suprianti Dhia Suprianti Dhinarty Umi Rachmawaty Dwi Mei Susiyadi Eddy Sutadji Endang Budiasih Endang Purwaningsih Fajar Nugroho Fauzana Gazali Fauziatul Fajaroh Fitria Rizkiana Fitriana, Dewi Khajar Fourin Indhira Megapratiwi Frida Kristining Tyas Habiddin HASAN SUBEKTI Hayuni Retno Widarti Hikmatul Fitri Husni Wahyu Wijaya Ima Rosyida Inova Putri Carera Intan Diah Purwandari Islamiyah, Kafita Krisnatul Isma Yanti Vitarisma Sukirno Putri Ismail Efendi Istri Setyowati Jacky Anggara Nenohai Jakub Saddam Akbar Jayawarsa, A.A. Ketut Kafita Krisnatul Islamiyah Kristining Tyas, Frida Laksana, Dek Ngurah Laba Laksmana, Sutandyo Dwija Laksono Trisnantoro Lestari, Putri Dwi Limbong, Stella Afrilita Margaretha Bhrizda Permatasari Mariyam, Dewi Meyga Evi Ferama Sari Meyga Ferama Sari Mohammad Arfi Setiawan Moreira, Ilidio X. Ms, Allien Kallala Mu'minin, Ali Amirul Muhammad Hubbi Muhammad Muchson Munzil Munzil , Munzil Nafi Isbadrianingtyas Nanda Intan Maharani Nani Farida Nazriati Nazriati dkk. Nendi, Ikhsan Nur Hamid Nurbani Jusuf Nurkholis Nurkholis Nurkholis Nurkholis Oktavia Sulistina Parlan . Prastika, Frissa Rizkihati Purba, Leony Sanga Lamsari Purba, Leony Sanga Lamsari Purwandari, Intan Diah Puspitasari, Risky Priliani Putra, Faaza'izzahaq Setta Putra, Vahemas Aditya pamila Putri Qori Utami Putri, Isma Yati Vitarisma Sukirno Rachmawaty, Dhinarty Umi Rafli, Muhammad Rahmawati Rahmawati Ratna Ekawati Reza Mega Wahyuni Ridwan Joharmawan Risky Priliani Puspitasari Rosyida, Ima Rusly Hidayah Rusly Hidayah RUSLY HIDAYAH Sakina, Balik Sholikhatus Sari, Noor Asni Savitri, Linggar Agil Setiawan, Nur Candra Eka Setyowati, Istri Shirly Rizki Kusumaningrum Shorihatul Inayah Sitanggang, Indah Siti Marfuah, Siti Siti Nurul Hidayati SITI NURUL HIDAYATI Sri Rahayu Sri Rahayu SRI RAHAYU Sri Rahayu Sri Rahayuningsih Stéphane Golhen Stéphane Golhen Sugiarto Sugiarto Suhadi Ibnu Suharjo Suharjo Suharti Sukainil Ahzan Sukaton, Anggia Rose Sukirno Putri, Isma Yanti Vitarisma Sumari Sumari Supriyono Koes Handayanto Surjani Wonorahardjo Sutandyo Dwija Laksmana Sutarno Sutarno Sutarno Sutarno Sutrisno, Sutrisno Syamsul Hadi Tangi, Hironimus Tinenti, Yanti Rosinda Tyas, Frida Kristining Ubed Sonai Arrazi Ubed Sonai Fahruddin Arrozi Vrisca Bella Cylindrica Wahyuni, Reza Mega Wardati, Dahlia Widiyanti Widiyanti, Widiyanti Wijaya, Anugerah Ricky Wulandari, Agtri Yahmin Yahmin Yulia Hidayati Yusran Khery Zahiro, Nilna Muna Zainal Abiddin Zelen Surya Minata